/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 05:04:37,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 05:04:37,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 05:04:37,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 05:04:37,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 05:04:37,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 05:04:37,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 05:04:37,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 05:04:37,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 05:04:37,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 05:04:37,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 05:04:37,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 05:04:37,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 05:04:37,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 05:04:37,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 05:04:37,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 05:04:37,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 05:04:37,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 05:04:37,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 05:04:37,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 05:04:37,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 05:04:37,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 05:04:37,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 05:04:37,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 05:04:37,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 05:04:37,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 05:04:37,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 05:04:37,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 05:04:37,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 05:04:37,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 05:04:37,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 05:04:37,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 05:04:37,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 05:04:37,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 05:04:37,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 05:04:37,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 05:04:37,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 05:04:37,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 05:04:37,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 05:04:37,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 05:04:37,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 05:04:37,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 05:04:37,854 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 05:04:37,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 05:04:37,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 05:04:37,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 05:04:37,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 05:04:37,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 05:04:37,856 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 05:04:37,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 05:04:37,857 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 05:04:37,857 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 05:04:37,857 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 05:04:37,858 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 05:04:37,858 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 05:04:37,858 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 05:04:37,858 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 05:04:37,858 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 05:04:37,858 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 05:04:37,858 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 05:04:37,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 05:04:37,859 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 05:04:37,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 05:04:37,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 05:04:37,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 05:04:37,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 05:04:37,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 05:04:37,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 05:04:37,860 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 05:04:37,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 05:04:37,861 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 05:04:37,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 05:04:37,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 05:04:37,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 05:04:37,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 05:04:37,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 05:04:37,862 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 05:04:37,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 05:04:37,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 05:04:37,862 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 05:04:37,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 05:04:37,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 05:04:37,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 05:04:37,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 05:04:38,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 05:04:38,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 05:04:38,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 05:04:38,121 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 05:04:38,122 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 05:04:38,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-04-03 05:04:39,306 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 05:04:39,787 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 05:04:39,788 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-04-03 05:04:39,814 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c21cdd280/bc09e8675ee548d4824811c114de5ac6/FLAGee86b7de5 [2023-04-03 05:04:39,828 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c21cdd280/bc09e8675ee548d4824811c114de5ac6 [2023-04-03 05:04:39,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 05:04:39,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 05:04:39,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 05:04:39,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 05:04:39,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 05:04:39,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 05:04:39" (1/1) ... [2023-04-03 05:04:39,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e228db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:39, skipping insertion in model container [2023-04-03 05:04:39,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 05:04:39" (1/1) ... [2023-04-03 05:04:39,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 05:04:39,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 05:04:40,639 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2023-04-03 05:04:41,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 05:04:41,295 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 05:04:41,386 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2023-04-03 05:04:41,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 05:04:41,558 WARN L667 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 05:04:41,559 WARN L667 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 05:04:41,559 WARN L667 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 05:04:41,565 INFO L208 MainTranslator]: Completed translation [2023-04-03 05:04:41,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41 WrapperNode [2023-04-03 05:04:41,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 05:04:41,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 05:04:41,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 05:04:41,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 05:04:41,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 05:04:41,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 05:04:41,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 05:04:41,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 05:04:41,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (1/1) ... [2023-04-03 05:04:41,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 05:04:41,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 05:04:41,881 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) [2023-04-03 05:04:41,904 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 [2023-04-03 05:04:41,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~int~X~~gfp_t~0~TO~VOID [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~gfp_t~0~TO~$Pointer$ [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~gfp_t~0~TO~int [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-04-03 05:04:41,923 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure get_order [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-03 05:04:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemleak_alloc [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_index [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_slab [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-03 05:04:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_large [2023-04-03 05:04:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-03 05:04:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 05:04:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 05:04:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-03 05:04:41,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-03 05:04:41,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-03 05:04:41,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-03 05:04:41,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-03 05:04:41,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-03 05:04:41,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-03 05:04:41,928 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2023-04-03 05:04:41,928 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-04-03 05:04:41,928 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-04-03 05:04:41,928 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-03 05:04:41,928 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-04-03 05:04:41,928 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-04-03 05:04:41,928 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2023-04-03 05:04:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-04-03 05:04:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-04-03 05:04:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_alloc_request [2023-04-03 05:04:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-04-03 05:04:41,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-04-03 05:04:41,930 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-04-03 05:04:41,930 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_selfpowered [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_controller_number [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure utf8_to_utf16le [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_get_string [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_descriptor_fillbuf [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_config_buf [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_copy_descriptors [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_endpoint [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_matches [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-04-03 05:04:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig_reset [2023-04-03 05:04:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-04-03 05:04:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-04-03 05:04:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2023-04-03 05:04:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_complete [2023-04-03 05:04:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-04-03 05:04:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-04-03 05:04:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-04-03 05:04:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_read [2023-04-03 05:04:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-04-03 05:04:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-04-03 05:04:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-04-03 05:04:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_ioctl [2023-04-03 05:04:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-04-03 05:04:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-04-03 05:04:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_set_config [2023-04-03 05:04:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure config_buf [2023-04-03 05:04:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_disconnect [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_gadget_driver_1 [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 05:04:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-04-03 05:04:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-04-03 05:04:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cdev_del_5 [2023-04-03 05:04:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cdev_init_6 [2023-04-03 05:04:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_chrdev_region_7 [2023-04-03 05:04:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_8 [2023-04-03 05:04:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_gadget_register_driver_9 [2023-04-03 05:04:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_10 [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region_11 [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_12 [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region_13 [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_gadget_unregister_driver_14 [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-03 05:04:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-03 05:04:41,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-03 05:04:41,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_create_class [2023-04-03 05:04:41,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_class [2023-04-03 05:04:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-04-03 05:04:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_region [2023-04-03 05:04:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-04-03 05:04:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_usb_gadget [2023-04-03 05:04:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_usb_gadget [2023-04-03 05:04:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 05:04:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_free_pages [2023-04-03 05:04:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-04-03 05:04:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-04-03 05:04:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-04-03 05:04:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_chrdev_region [2023-04-03 05:04:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2023-04-03 05:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_register_driver [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_unregister_driver [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure autoremove_wake_function [2023-04-03 05:04:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 05:04:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-03 05:04:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-03 05:04:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_prefetch [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-03 05:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_create_class [2023-04-03 05:04:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-04-03 05:04:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_region [2023-04-03 05:04:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-04-03 05:04:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_usb_gadget [2023-04-03 05:04:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_usb_gadget [2023-04-03 05:04:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-04-03 05:04:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure get_order [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-04-03 05:04:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2023-04-03 05:04:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-04-03 05:04:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-04-03 05:04:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure autoremove_wake_function [2023-04-03 05:04:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-04-03 05:04:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-04-03 05:04:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-03 05:04:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure __get_free_pages [2023-04-03 05:04:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 05:04:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure kmemleak_alloc [2023-04-03 05:04:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~int~X~~gfp_t~0~TO~VOID [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_index [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_slab [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-03 05:04:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-04-03 05:04:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_large [2023-04-03 05:04:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-03 05:04:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-03 05:04:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_gadget_driver_1 [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_8 [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_10 [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_12 [2023-04-03 05:04:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_chrdev_region [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_chrdev_region_7 [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region_11 [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region_13 [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cdev_init_6 [2023-04-03 05:04:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cdev_del_5 [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_alloc_request [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~gfp_t~0~TO~$Pointer$ [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~gfp_t~0~TO~int [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-04-03 05:04:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_selfpowered [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_register_driver [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_gadget_register_driver_9 [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_unregister_driver [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_gadget_unregister_driver_14 [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_get_string [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_descriptor_fillbuf [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_config_buf [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_copy_descriptors [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_endpoint [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig_reset [2023-04-03 05:04:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_controller_number [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure utf8_to_utf16le [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure ep_matches [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure tx_complete [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure printer_read [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-03 05:04:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_ioctl [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_set_config [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure config_buf [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_disconnect [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-04-03 05:04:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_class [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-03 05:04:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-03 05:04:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 05:04:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-03 05:04:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-03 05:04:42,620 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 05:04:42,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 05:04:42,983 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-03 05:04:55,435 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-04-03 05:04:59,720 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 05:05:00,721 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 05:05:00,722 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 05:05:00,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 05:05:00 BoogieIcfgContainer [2023-04-03 05:05:00,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 05:05:00,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 05:05:00,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 05:05:00,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 05:05:00,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 05:04:39" (1/3) ... [2023-04-03 05:05:00,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f07e3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 05:05:00, skipping insertion in model container [2023-04-03 05:05:00,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 05:04:41" (2/3) ... [2023-04-03 05:05:00,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f07e3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 05:05:00, skipping insertion in model container [2023-04-03 05:05:00,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 05:05:00" (3/3) ... [2023-04-03 05:05:00,735 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-04-03 05:05:00,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 05:05:00,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 05:05:00,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 05:05:00,846 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=FINITE_AUTOMATA, 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;@378ee3b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 05:05:00,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 05:05:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 1460 states, 840 states have (on average 1.3011904761904762) internal successors, (1093), 890 states have internal predecessors, (1093), 457 states have call successors, (457), 159 states have call predecessors, (457), 157 states have return successors, (452), 447 states have call predecessors, (452), 452 states have call successors, (452) [2023-04-03 05:05:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-03 05:05:00,883 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:05:00,883 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:05:00,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:05:00,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:05:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -259473126, now seen corresponding path program 1 times [2023-04-03 05:05:00,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:05:00,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067525064] [2023-04-03 05:05:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:05:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:05:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:05:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-03 05:05:01,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:05:01,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067525064] [2023-04-03 05:05:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067525064] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:05:01,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:05:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 05:05:01,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964293963] [2023-04-03 05:05:01,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:05:01,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 05:05:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:05:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 05:05:01,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:05:01,899 INFO L87 Difference]: Start difference. First operand has 1460 states, 840 states have (on average 1.3011904761904762) internal successors, (1093), 890 states have internal predecessors, (1093), 457 states have call successors, (457), 159 states have call predecessors, (457), 157 states have return successors, (452), 447 states have call predecessors, (452), 452 states have call successors, (452) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-03 05:05:03,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:06,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:05:07,583 INFO L93 Difference]: Finished difference Result 3975 states and 5582 transitions. [2023-04-03 05:05:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 05:05:07,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2023-04-03 05:05:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:05:07,612 INFO L225 Difference]: With dead ends: 3975 [2023-04-03 05:05:07,612 INFO L226 Difference]: Without dead ends: 2540 [2023-04-03 05:05:07,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:05:07,626 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 1780 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-03 05:05:07,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 3311 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 351 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2023-04-03 05:05:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2023-04-03 05:05:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2534. [2023-04-03 05:05:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 1470 states have (on average 1.3006802721088435) internal successors, (1912), 1535 states have internal predecessors, (1912), 803 states have call successors, (803), 263 states have call predecessors, (803), 260 states have return successors, (788), 778 states have call predecessors, (788), 788 states have call successors, (788) [2023-04-03 05:05:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3503 transitions. [2023-04-03 05:05:07,849 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3503 transitions. Word has length 65 [2023-04-03 05:05:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:05:07,850 INFO L495 AbstractCegarLoop]: Abstraction has 2534 states and 3503 transitions. [2023-04-03 05:05:07,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-03 05:05:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3503 transitions. [2023-04-03 05:05:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 05:05:07,854 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:05:07,854 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:05:07,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 05:05:07,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:05:07,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:05:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1398197274, now seen corresponding path program 1 times [2023-04-03 05:05:07,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:05:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795225679] [2023-04-03 05:05:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:05:07,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:05:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:05:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-03 05:05:08,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:05:08,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795225679] [2023-04-03 05:05:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795225679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:05:08,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:05:08,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 05:05:08,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73685330] [2023-04-03 05:05:08,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:05:08,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 05:05:08,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:05:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 05:05:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:05:08,679 INFO L87 Difference]: Start difference. First operand 2534 states and 3503 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 05:05:10,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:05:12,303 INFO L93 Difference]: Finished difference Result 4985 states and 6916 transitions. [2023-04-03 05:05:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 05:05:12,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2023-04-03 05:05:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:05:12,338 INFO L225 Difference]: With dead ends: 4985 [2023-04-03 05:05:12,338 INFO L226 Difference]: Without dead ends: 4954 [2023-04-03 05:05:12,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:05:12,344 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1813 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-03 05:05:12,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 3265 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 346 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-04-03 05:05:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2023-04-03 05:05:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 4950. [2023-04-03 05:05:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 2880 states have (on average 1.3) internal successors, (3744), 2998 states have internal predecessors, (3744), 1569 states have call successors, (1569), 513 states have call predecessors, (1569), 500 states have return successors, (1557), 1524 states have call predecessors, (1557), 1550 states have call successors, (1557) [2023-04-03 05:05:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 6870 transitions. [2023-04-03 05:05:12,601 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 6870 transitions. Word has length 66 [2023-04-03 05:05:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:05:12,601 INFO L495 AbstractCegarLoop]: Abstraction has 4950 states and 6870 transitions. [2023-04-03 05:05:12,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 05:05:12,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 6870 transitions. [2023-04-03 05:05:12,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 05:05:12,603 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:05:12,603 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:05:12,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 05:05:12,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:05:12,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:05:12,604 INFO L85 PathProgramCache]: Analyzing trace with hash 391575228, now seen corresponding path program 1 times [2023-04-03 05:05:12,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:05:12,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406077683] [2023-04-03 05:05:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:05:12,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:05:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:05:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-03 05:05:13,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:05:13,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406077683] [2023-04-03 05:05:13,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406077683] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:05:13,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:05:13,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 05:05:13,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025711439] [2023-04-03 05:05:13,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:05:13,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 05:05:13,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:05:13,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 05:05:13,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:05:13,190 INFO L87 Difference]: Start difference. First operand 4950 states and 6870 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 05:05:15,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:05:17,028 INFO L93 Difference]: Finished difference Result 14749 states and 20507 transitions. [2023-04-03 05:05:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 05:05:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2023-04-03 05:05:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:05:17,111 INFO L225 Difference]: With dead ends: 14749 [2023-04-03 05:05:17,111 INFO L226 Difference]: Without dead ends: 9820 [2023-04-03 05:05:17,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:05:17,145 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 1808 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-03 05:05:17,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 3444 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 360 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2023-04-03 05:05:17,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2023-04-03 05:05:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9809. [2023-04-03 05:05:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9809 states, 5715 states have (on average 1.300787401574803) internal successors, (7434), 5943 states have internal predecessors, (7434), 3107 states have call successors, (3107), 1011 states have call predecessors, (3107), 986 states have return successors, (3093), 3026 states have call predecessors, (3093), 3072 states have call successors, (3093) [2023-04-03 05:05:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9809 states to 9809 states and 13634 transitions. [2023-04-03 05:05:17,766 INFO L78 Accepts]: Start accepts. Automaton has 9809 states and 13634 transitions. Word has length 67 [2023-04-03 05:05:17,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:05:17,767 INFO L495 AbstractCegarLoop]: Abstraction has 9809 states and 13634 transitions. [2023-04-03 05:05:17,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 05:05:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 9809 states and 13634 transitions. [2023-04-03 05:05:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 05:05:17,774 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:05:17,774 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:05:17,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 05:05:17,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:05:17,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:05:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1475011949, now seen corresponding path program 1 times [2023-04-03 05:05:17,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:05:17,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642576382] [2023-04-03 05:05:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:05:17,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:05:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:05:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-03 05:05:18,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:05:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642576382] [2023-04-03 05:05:18,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642576382] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:05:18,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:05:18,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 05:05:18,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785951387] [2023-04-03 05:05:18,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:05:18,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 05:05:18,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:05:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 05:05:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 05:05:18,407 INFO L87 Difference]: Start difference. First operand 9809 states and 13634 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-03 05:05:20,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:22,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:05:35,168 INFO L93 Difference]: Finished difference Result 30012 states and 41961 transitions. [2023-04-03 05:05:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 05:05:35,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 96 [2023-04-03 05:05:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:05:35,357 INFO L225 Difference]: With dead ends: 30012 [2023-04-03 05:05:35,358 INFO L226 Difference]: Without dead ends: 20220 [2023-04-03 05:05:35,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 05:05:35,614 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 3310 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 1684 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3704 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 5088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1684 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-04-03 05:05:35,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3704 Valid, 590 Invalid, 5088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1684 Valid, 3402 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2023-04-03 05:05:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20220 states. [2023-04-03 05:05:36,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20220 to 19559. [2023-04-03 05:05:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19559 states, 11414 states have (on average 1.3010338181181005) internal successors, (14850), 11863 states have internal predecessors, (14850), 6174 states have call successors, (6174), 2001 states have call predecessors, (6174), 1970 states have return successors, (6216), 6038 states have call predecessors, (6216), 6128 states have call successors, (6216) [2023-04-03 05:05:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19559 states to 19559 states and 27240 transitions. [2023-04-03 05:05:36,879 INFO L78 Accepts]: Start accepts. Automaton has 19559 states and 27240 transitions. Word has length 96 [2023-04-03 05:05:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:05:36,880 INFO L495 AbstractCegarLoop]: Abstraction has 19559 states and 27240 transitions. [2023-04-03 05:05:36,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-03 05:05:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 19559 states and 27240 transitions. [2023-04-03 05:05:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 05:05:36,884 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:05:36,884 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:05:36,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 05:05:36,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:05:36,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:05:36,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1573826254, now seen corresponding path program 1 times [2023-04-03 05:05:36,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:05:36,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519236806] [2023-04-03 05:05:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:05:36,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:05:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:05:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-03 05:05:39,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:05:39,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519236806] [2023-04-03 05:05:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519236806] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:05:39,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:05:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-03 05:05:39,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076695849] [2023-04-03 05:05:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:05:39,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-03 05:05:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:05:39,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-03 05:05:39,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-04-03 05:05:39,541 INFO L87 Difference]: Start difference. First operand 19559 states and 27240 transitions. Second operand has 14 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-03 05:05:41,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:43,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:45,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:47,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:49,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:51,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:53,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:55,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:05:58,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:00,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:02,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:04,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:13,077 INFO L93 Difference]: Finished difference Result 53656 states and 75023 transitions. [2023-04-03 05:06:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 05:06:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 98 [2023-04-03 05:06:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:13,270 INFO L225 Difference]: With dead ends: 53656 [2023-04-03 05:06:13,270 INFO L226 Difference]: Without dead ends: 34118 [2023-04-03 05:06:13,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2023-04-03 05:06:13,355 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 1860 mSDsluCounter, 19902 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 25 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 21566 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:13,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1877 Valid, 21566 Invalid, 2469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 2432 Invalid, 12 Unknown, 0 Unchecked, 31.3s Time] [2023-04-03 05:06:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34118 states. [2023-04-03 05:06:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34118 to 33964. [2023-04-03 05:06:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33964 states, 19853 states have (on average 1.3016168840981213) internal successors, (25841), 20644 states have internal predecessors, (25841), 10691 states have call successors, (10691), 3426 states have call predecessors, (10691), 3419 states have return successors, (10958), 10495 states have call predecessors, (10958), 10639 states have call successors, (10958) [2023-04-03 05:06:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33964 states to 33964 states and 47490 transitions. [2023-04-03 05:06:15,467 INFO L78 Accepts]: Start accepts. Automaton has 33964 states and 47490 transitions. Word has length 98 [2023-04-03 05:06:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:06:15,468 INFO L495 AbstractCegarLoop]: Abstraction has 33964 states and 47490 transitions. [2023-04-03 05:06:15,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-03 05:06:15,468 INFO L276 IsEmpty]: Start isEmpty. Operand 33964 states and 47490 transitions. [2023-04-03 05:06:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 05:06:15,477 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:06:15,477 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:06:15,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 05:06:15,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:06:15,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:06:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 560742065, now seen corresponding path program 1 times [2023-04-03 05:06:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:06:15,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453492285] [2023-04-03 05:06:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:06:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:06:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:06:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-03 05:06:20,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:06:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453492285] [2023-04-03 05:06:20,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453492285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:06:20,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:06:20,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-03 05:06:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192095696] [2023-04-03 05:06:20,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:06:20,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-03 05:06:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:06:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-03 05:06:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2023-04-03 05:06:20,275 INFO L87 Difference]: Start difference. First operand 33964 states and 47490 transitions. Second operand has 16 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 05:06:22,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:24,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:26,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:28,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:30,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:32,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:34,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:36,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:38,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:40,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:42,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:44,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:46,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:49,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:06:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:06:59,302 INFO L93 Difference]: Finished difference Result 82426 states and 115395 transitions. [2023-04-03 05:06:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-03 05:06:59,303 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 113 [2023-04-03 05:06:59,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:06:59,599 INFO L225 Difference]: With dead ends: 82426 [2023-04-03 05:06:59,599 INFO L226 Difference]: Without dead ends: 48483 [2023-04-03 05:06:59,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 05:06:59,718 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1856 mSDsluCounter, 21542 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 29 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 23207 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2023-04-03 05:06:59,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 23207 Invalid, 2736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 2693 Invalid, 14 Unknown, 0 Unchecked, 35.3s Time] [2023-04-03 05:06:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48483 states. [2023-04-03 05:07:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48483 to 48319. [2023-04-03 05:07:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48319 states, 28252 states have (on average 1.3020671102930765) internal successors, (36786), 29383 states have internal predecessors, (36786), 15208 states have call successors, (15208), 4851 states have call predecessors, (15208), 4858 states have return successors, (15696), 14944 states have call predecessors, (15696), 15150 states have call successors, (15696) [2023-04-03 05:07:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48319 states to 48319 states and 67690 transitions. [2023-04-03 05:07:02,870 INFO L78 Accepts]: Start accepts. Automaton has 48319 states and 67690 transitions. Word has length 113 [2023-04-03 05:07:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:07:02,872 INFO L495 AbstractCegarLoop]: Abstraction has 48319 states and 67690 transitions. [2023-04-03 05:07:02,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-03 05:07:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 48319 states and 67690 transitions. [2023-04-03 05:07:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-03 05:07:02,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:07:02,877 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:07:02,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 05:07:02,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:07:02,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:07:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash -374635801, now seen corresponding path program 1 times [2023-04-03 05:07:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:07:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724929041] [2023-04-03 05:07:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:07:02,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:07:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:07:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-03 05:07:03,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:07:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724929041] [2023-04-03 05:07:03,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724929041] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:07:03,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:07:03,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 05:07:03,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420101366] [2023-04-03 05:07:03,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:07:03,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 05:07:03,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:07:03,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 05:07:03,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:07:03,319 INFO L87 Difference]: Start difference. First operand 48319 states and 67690 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-04-03 05:07:05,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:07,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:07:11,414 INFO L93 Difference]: Finished difference Result 96624 states and 135359 transitions. [2023-04-03 05:07:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 05:07:11,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 117 [2023-04-03 05:07:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:07:11,642 INFO L225 Difference]: With dead ends: 96624 [2023-04-03 05:07:11,642 INFO L226 Difference]: Without dead ends: 48326 [2023-04-03 05:07:11,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 05:07:11,827 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 1747 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-03 05:07:11,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 4865 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 499 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2023-04-03 05:07:11,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48326 states. [2023-04-03 05:07:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48326 to 41195. [2023-04-03 05:07:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41195 states, 24066 states have (on average 1.3008393584309814) internal successors, (31306), 25038 states have internal predecessors, (31306), 12970 states have call successors, (12970), 4152 states have call predecessors, (12970), 4158 states have return successors, (13204), 12735 states have call predecessors, (13204), 12918 states have call successors, (13204) [2023-04-03 05:07:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41195 states to 41195 states and 57480 transitions. [2023-04-03 05:07:14,622 INFO L78 Accepts]: Start accepts. Automaton has 41195 states and 57480 transitions. Word has length 117 [2023-04-03 05:07:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:07:14,623 INFO L495 AbstractCegarLoop]: Abstraction has 41195 states and 57480 transitions. [2023-04-03 05:07:14,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-04-03 05:07:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 41195 states and 57480 transitions. [2023-04-03 05:07:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-03 05:07:14,631 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:07:14,631 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:07:14,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 05:07:14,631 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:07:14,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:07:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash -521991875, now seen corresponding path program 1 times [2023-04-03 05:07:14,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:07:14,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123947255] [2023-04-03 05:07:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:07:14,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:07:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:07:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-03 05:07:18,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:07:18,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123947255] [2023-04-03 05:07:18,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123947255] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:07:18,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:07:18,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-03 05:07:18,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153559286] [2023-04-03 05:07:18,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:07:18,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-03 05:07:18,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:07:18,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-03 05:07:18,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2023-04-03 05:07:18,433 INFO L87 Difference]: Start difference. First operand 41195 states and 57480 transitions. Second operand has 16 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 5 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (23), 7 states have call predecessors, (23), 5 states have call successors, (23) [2023-04-03 05:07:20,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:22,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:24,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:26,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:28,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:30,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:32,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:34,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:36,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:38,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:40,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:42,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:44,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:47,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:07:49,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:08:02,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 05:08:02,867 INFO L93 Difference]: Finished difference Result 77226 states and 107819 transitions. [2023-04-03 05:08:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-03 05:08:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 5 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (23), 7 states have call predecessors, (23), 5 states have call successors, (23) Word has length 129 [2023-04-03 05:08:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 05:08:03,059 INFO L225 Difference]: With dead ends: 77226 [2023-04-03 05:08:03,059 INFO L226 Difference]: Without dead ends: 36052 [2023-04-03 05:08:03,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 05:08:03,236 INFO L413 NwaCegarLoop]: 3217 mSDtfsCounter, 1721 mSDsluCounter, 43311 mSDsCounter, 0 mSdLazyCounter, 5258 mSolverCounterSat, 14 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 46528 SdHoareTripleChecker+Invalid, 5287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 5258 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2023-04-03 05:08:03,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 46528 Invalid, 5287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 5258 Invalid, 15 Unknown, 0 Unchecked, 41.0s Time] [2023-04-03 05:08:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36052 states. [2023-04-03 05:08:05,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36052 to 35913. [2023-04-03 05:08:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35913 states, 20977 states have (on average 1.3019974257520142) internal successors, (27312), 21821 states have internal predecessors, (27312), 11340 states have call successors, (11340), 3590 states have call predecessors, (11340), 3595 states have return successors, (11446), 11146 states have call predecessors, (11446), 11305 states have call successors, (11446) [2023-04-03 05:08:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35913 states to 35913 states and 50098 transitions. [2023-04-03 05:08:05,678 INFO L78 Accepts]: Start accepts. Automaton has 35913 states and 50098 transitions. Word has length 129 [2023-04-03 05:08:05,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 05:08:05,679 INFO L495 AbstractCegarLoop]: Abstraction has 35913 states and 50098 transitions. [2023-04-03 05:08:05,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 5 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (23), 7 states have call predecessors, (23), 5 states have call successors, (23) [2023-04-03 05:08:05,679 INFO L276 IsEmpty]: Start isEmpty. Operand 35913 states and 50098 transitions. [2023-04-03 05:08:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-03 05:08:05,687 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 05:08:05,687 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 05:08:05,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 05:08:05,687 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 05:08:05,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 05:08:05,688 INFO L85 PathProgramCache]: Analyzing trace with hash 313665570, now seen corresponding path program 1 times [2023-04-03 05:08:05,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 05:08:05,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320499872] [2023-04-03 05:08:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 05:08:05,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 05:08:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 05:08:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-03 05:08:09,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 05:08:09,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320499872] [2023-04-03 05:08:09,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320499872] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 05:08:09,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 05:08:09,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-03 05:08:09,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612981458] [2023-04-03 05:08:09,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 05:08:09,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-03 05:08:09,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 05:08:09,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-03 05:08:09,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2023-04-03 05:08:09,112 INFO L87 Difference]: Start difference. First operand 35913 states and 50098 transitions. Second operand has 19 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 6 states have call successors, (28), 2 states have call predecessors, (28), 6 states have return successors, (23), 10 states have call predecessors, (23), 6 states have call successors, (23) [2023-04-03 05:08:11,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:08:13,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:08:15,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:08:17,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 05:08:19,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []