/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 EqDomain -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 13:33:51,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 13:33:51,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 13:33:51,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 13:33:51,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 13:33:51,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 13:33:51,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 13:33:51,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 13:33:51,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 13:33:51,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 13:33:51,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 13:33:51,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 13:33:51,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 13:33:51,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 13:33:51,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 13:33:51,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 13:33:51,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 13:33:51,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 13:33:51,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 13:33:51,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 13:33:51,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 13:33:51,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 13:33:51,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 13:33:51,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 13:33:51,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 13:33:51,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 13:33:51,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 13:33:51,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 13:33:51,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 13:33:51,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 13:33:51,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 13:33:51,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 13:33:51,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 13:33:51,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 13:33:51,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 13:33:51,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 13:33:51,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 13:33:51,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 13:33:51,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 13:33:51,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 13:33:51,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 13:33:51,734 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 [2023-04-01 13:33:51,748 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 13:33:51,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 13:33:51,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 13:33:51,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 13:33:51,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 13:33:51,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 13:33:51,749 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 13:33:51,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 13:33:51,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 13:33:51,750 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 13:33:51,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 13:33:51,751 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 13:33:51,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 13:33:51,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 13:33:51,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 13:33:51,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 13:33:51,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 13:33:51,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 13:33:51,751 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 13:33:51,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:33:51,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 13:33:51,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 13:33:51,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 13:33:51,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 13:33:51,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 13:33:51,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 13:33:51,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 13:33:51,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 13:33:51,965 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 13:33:51,965 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 13:33:51,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 13:33:52,905 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 13:33:53,243 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 13:33:53,243 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 13:33:53,277 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eafb97a90/8a8f34dd695c4e28b378136f3a48366b/FLAG71a66bd7d [2023-04-01 13:33:53,291 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eafb97a90/8a8f34dd695c4e28b378136f3a48366b [2023-04-01 13:33:53,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 13:33:53,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 13:33:53,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 13:33:53,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 13:33:53,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 13:33:53,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:33:53" (1/1) ... [2023-04-01 13:33:53,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e83630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:53, skipping insertion in model container [2023-04-01 13:33:53,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:33:53" (1/1) ... [2023-04-01 13:33:53,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 13:33:53,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 13:33:54,369 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-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2023-04-01 13:33:54,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:33:54,440 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 13:33:54,616 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-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2023-04-01 13:33:54,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:33:54,665 WARN L667 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 13:33:54,666 WARN L667 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 13:33:54,670 INFO L208 MainTranslator]: Completed translation [2023-04-01 13:33:54,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54 WrapperNode [2023-04-01 13:33:54,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 13:33:54,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 13:33:54,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 13:33:54,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 13:33:54,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,895 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 13:33:54,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 13:33:54,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 13:33:54,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 13:33:54,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (1/1) ... [2023-04-01 13:33:54,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:33:54,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:33:54,959 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) [2023-04-01 13:33:54,970 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 [2023-04-01 13:33:54,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~gfp_t~0~TO~$Pointer$ [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~gfp_t~0~TO~int [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-04-01 13:33:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2023-04-01 13:33:54,993 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-04-01 13:33:54,993 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-04-01 13:33:54,993 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-04-01 13:33:54,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2023-04-01 13:33:54,993 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 13:33:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2023-04-01 13:33:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-04-01 13:33:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-04-01 13:33:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_alloc_request [2023-04-01 13:33:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-04-01 13:33:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-04-01 13:33:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-04-01 13:33:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-04-01 13:33:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_selfpowered [2023-04-01 13:33:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-04-01 13:33:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_controller_number [2023-04-01 13:33:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure utf8_to_utf16le [2023-04-01 13:33:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_get_string [2023-04-01 13:33:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_descriptor_fillbuf [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_config_buf [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_copy_descriptors [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_endpoint [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_matches [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig_reset [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2023-04-01 13:33:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_complete [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_read [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_ioctl [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_set_config [2023-04-01 13:33:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure config_buf [2023-04-01 13:33:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-04-01 13:33:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-04-01 13:33:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-04-01 13:33:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-04-01 13:33:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_disconnect [2023-04-01 13:33:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-04-01 13:33:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-04-01 13:33:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 13:33:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 13:33:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_gadget_driver_1 [2023-04-01 13:33:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2023-04-01 13:33:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 13:33:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-04-01 13:33:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cdev_del_7 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cdev_init_8 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_chrdev_region_9 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_10 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_gadget_register_driver_11 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_12 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region_13 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_14 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region_15 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_gadget_unregister_driver_16 [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-01 13:33:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_create_class [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_class [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_region [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-04-01 13:33:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_usb_gadget [2023-04-01 13:33:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_usb_gadget [2023-04-01 13:33:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 13:33:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-04-01 13:33:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-04-01 13:33:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-04-01 13:33:55,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-01 13:33:55,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-04-01 13:33:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-04-01 13:33:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_chrdev_region [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-01 13:33:55,012 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-04-01 13:33:55,013 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_register_driver [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_unregister_driver [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure autoremove_wake_function [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 13:33:55,014 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_prefetch [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-04-01 13:33:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_create_class [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-04-01 13:33:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_region [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_usb_gadget [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_usb_gadget [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-04-01 13:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-04-01 13:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure autoremove_wake_function [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 13:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_gadget_driver_1 [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-01 13:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-04-01 13:33:55,021 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-04-01 13:33:55,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_10 [2023-04-01 13:33:55,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_12 [2023-04-01 13:33:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_14 [2023-04-01 13:33:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-01 13:33:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_chrdev_region [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_chrdev_region_9 [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region_13 [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region_15 [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cdev_init_8 [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cdev_del_7 [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2023-04-01 13:33:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_alloc_request [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~gfp_t~0~TO~$Pointer$ [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~gfp_t~0~TO~int [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_selfpowered [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_register_driver [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_gadget_register_driver_11 [2023-04-01 13:33:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_unregister_driver [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_gadget_unregister_driver_16 [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_get_string [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_descriptor_fillbuf [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_config_buf [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_copy_descriptors [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_endpoint [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig_reset [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_controller_number [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure utf8_to_utf16le [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure ep_matches [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2023-04-01 13:33:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure tx_complete [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_read [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_ioctl [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_set_config [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure config_buf [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-04-01 13:33:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure printer_disconnect [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_class [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 13:33:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 13:33:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 13:33:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-01 13:33:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-01 13:33:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 13:33:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-01 13:33:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-01 13:33:55,529 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 13:33:55,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 13:33:55,811 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 13:34:09,843 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 13:34:10,481 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 13:34:10,482 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 13:34:10,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:34:10 BoogieIcfgContainer [2023-04-01 13:34:10,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 13:34:10,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 13:34:10,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 13:34:10,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 13:34:10,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:33:53" (1/3) ... [2023-04-01 13:34:10,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a31c1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:34:10, skipping insertion in model container [2023-04-01 13:34:10,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:33:54" (2/3) ... [2023-04-01 13:34:10,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a31c1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:34:10, skipping insertion in model container [2023-04-01 13:34:10,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:34:10" (3/3) ... [2023-04-01 13:34:10,494 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-04-01 13:34:10,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 13:34:10,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 13:34:10,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 13:34:10,591 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;@12cb7419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 13:34:10,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 13:34:10,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 1416 states, 812 states have (on average 1.3029556650246306) internal successors, (1058), 863 states have internal predecessors, (1058), 451 states have call successors, (451), 147 states have call predecessors, (451), 146 states have return successors, (445), 440 states have call predecessors, (445), 445 states have call successors, (445) [2023-04-01 13:34:10,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-01 13:34:10,623 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:10,624 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:10,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:10,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 428047914, now seen corresponding path program 1 times [2023-04-01 13:34:10,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178115834] [2023-04-01 13:34:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:10,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-01 13:34:11,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:11,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178115834] [2023-04-01 13:34:11,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178115834] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:11,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:11,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:34:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953189914] [2023-04-01 13:34:11,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:11,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:34:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:34:11,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:34:11,515 INFO L87 Difference]: Start difference. First operand has 1416 states, 812 states have (on average 1.3029556650246306) internal successors, (1058), 863 states have internal predecessors, (1058), 451 states have call successors, (451), 147 states have call predecessors, (451), 146 states have return successors, (445), 440 states have call predecessors, (445), 445 states have call successors, (445) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-04-01 13:34:13,555 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 [] [2023-04-01 13:34:15,580 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 [] [2023-04-01 13:34:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:16,761 INFO L93 Difference]: Finished difference Result 3886 states and 5411 transitions. [2023-04-01 13:34:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:34:16,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 145 [2023-04-01 13:34:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:16,784 INFO L225 Difference]: With dead ends: 3886 [2023-04-01 13:34:16,784 INFO L226 Difference]: Without dead ends: 2529 [2023-04-01 13:34:16,794 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 [2023-04-01 13:34:16,797 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1761 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:16,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 3294 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 13:34:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2023-04-01 13:34:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2523. [2023-04-01 13:34:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 1460 states have (on average 1.3) internal successors, (1898), 1525 states have internal predecessors, (1898), 801 states have call successors, (801), 264 states have call predecessors, (801), 261 states have return successors, (786), 776 states have call predecessors, (786), 786 states have call successors, (786) [2023-04-01 13:34:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3485 transitions. [2023-04-01 13:34:16,956 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3485 transitions. Word has length 145 [2023-04-01 13:34:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:16,958 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 3485 transitions. [2023-04-01 13:34:16,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-04-01 13:34:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3485 transitions. [2023-04-01 13:34:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 13:34:16,962 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:16,962 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:16,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 13:34:16,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:16,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:16,963 INFO L85 PathProgramCache]: Analyzing trace with hash -995001569, now seen corresponding path program 1 times [2023-04-01 13:34:16,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:16,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344794533] [2023-04-01 13:34:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-01 13:34:17,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:17,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344794533] [2023-04-01 13:34:17,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344794533] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:17,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:17,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:34:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235107991] [2023-04-01 13:34:17,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:34:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:34:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:34:17,450 INFO L87 Difference]: Start difference. First operand 2523 states and 3485 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-01 13:34:19,476 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 [] [2023-04-01 13:34:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:20,737 INFO L93 Difference]: Finished difference Result 4950 states and 6862 transitions. [2023-04-01 13:34:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:34:20,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-04-01 13:34:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:20,761 INFO L225 Difference]: With dead ends: 4950 [2023-04-01 13:34:20,761 INFO L226 Difference]: Without dead ends: 4919 [2023-04-01 13:34:20,764 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 [2023-04-01 13:34:20,765 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 1802 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:20,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 3258 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 352 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 13:34:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2023-04-01 13:34:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4915. [2023-04-01 13:34:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4915 states, 2854 states have (on average 1.2999299229152068) internal successors, (3710), 2972 states have internal predecessors, (3710), 1559 states have call successors, (1559), 514 states have call predecessors, (1559), 501 states have return successors, (1547), 1514 states have call predecessors, (1547), 1540 states have call successors, (1547) [2023-04-01 13:34:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 6816 transitions. [2023-04-01 13:34:20,968 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 6816 transitions. Word has length 146 [2023-04-01 13:34:20,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:20,968 INFO L495 AbstractCegarLoop]: Abstraction has 4915 states and 6816 transitions. [2023-04-01 13:34:20,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-01 13:34:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 6816 transitions. [2023-04-01 13:34:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 13:34:20,970 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:20,970 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:20,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 13:34:20,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:20,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash -782705687, now seen corresponding path program 1 times [2023-04-01 13:34:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:20,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297335551] [2023-04-01 13:34:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:20,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-01 13:34:21,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:21,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297335551] [2023-04-01 13:34:21,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297335551] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:21,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:21,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:34:21,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228246975] [2023-04-01 13:34:21,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:21,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:34:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:21,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:34:21,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:34:21,502 INFO L87 Difference]: Start difference. First operand 4915 states and 6816 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-01 13:34:23,545 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 [] [2023-04-01 13:34:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:24,777 INFO L93 Difference]: Finished difference Result 14618 states and 20309 transitions. [2023-04-01 13:34:24,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:34:24,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2023-04-01 13:34:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:24,822 INFO L225 Difference]: With dead ends: 14618 [2023-04-01 13:34:24,823 INFO L226 Difference]: Without dead ends: 9737 [2023-04-01 13:34:24,840 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 [2023-04-01 13:34:24,841 INFO L413 NwaCegarLoop]: 1823 mSDtfsCounter, 1799 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:24,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 3400 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 361 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 13:34:24,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9737 states. [2023-04-01 13:34:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9737 to 9726. [2023-04-01 13:34:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9726 states, 5657 states have (on average 1.3010429556301928) internal successors, (7360), 5885 states have internal predecessors, (7360), 3081 states have call successors, (3081), 1012 states have call predecessors, (3081), 987 states have return successors, (3067), 3000 states have call predecessors, (3067), 3046 states have call successors, (3067) [2023-04-01 13:34:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9726 states to 9726 states and 13508 transitions. [2023-04-01 13:34:25,204 INFO L78 Accepts]: Start accepts. Automaton has 9726 states and 13508 transitions. Word has length 147 [2023-04-01 13:34:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:25,205 INFO L495 AbstractCegarLoop]: Abstraction has 9726 states and 13508 transitions. [2023-04-01 13:34:25,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-01 13:34:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 9726 states and 13508 transitions. [2023-04-01 13:34:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-04-01 13:34:25,210 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:25,210 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:25,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 13:34:25,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:25,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash -651313781, now seen corresponding path program 1 times [2023-04-01 13:34:25,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:25,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887400353] [2023-04-01 13:34:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:25,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-01 13:34:25,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887400353] [2023-04-01 13:34:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887400353] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:25,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:34:25,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 13:34:25,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293694463] [2023-04-01 13:34:25,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:25,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 13:34:25,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:25,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 13:34:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 13:34:25,755 INFO L87 Difference]: Start difference. First operand 9726 states and 13508 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 13:34:27,782 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 [] [2023-04-01 13:34:29,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:39,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:34:39,975 INFO L93 Difference]: Finished difference Result 29737 states and 41547 transitions. [2023-04-01 13:34:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 13:34:39,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 176 [2023-04-01 13:34:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:34:40,084 INFO L225 Difference]: With dead ends: 29737 [2023-04-01 13:34:40,085 INFO L226 Difference]: Without dead ends: 20041 [2023-04-01 13:34:40,127 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 [2023-04-01 13:34:40,129 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 3284 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 1687 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3674 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 5064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1687 IncrementalHoareTripleChecker+Valid, 3375 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:34:40,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3674 Valid, 599 Invalid, 5064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1687 Valid, 3375 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2023-04-01 13:34:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20041 states. [2023-04-01 13:34:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20041 to 19380. [2023-04-01 13:34:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19380 states, 11292 states have (on average 1.3014523556500177) internal successors, (14696), 11741 states have internal predecessors, (14696), 6116 states have call successors, (6116), 2002 states have call predecessors, (6116), 1971 states have return successors, (6158), 5980 states have call predecessors, (6158), 6070 states have call successors, (6158) [2023-04-01 13:34:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19380 states to 19380 states and 26970 transitions. [2023-04-01 13:34:41,013 INFO L78 Accepts]: Start accepts. Automaton has 19380 states and 26970 transitions. Word has length 176 [2023-04-01 13:34:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:34:41,014 INFO L495 AbstractCegarLoop]: Abstraction has 19380 states and 26970 transitions. [2023-04-01 13:34:41,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 13:34:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19380 states and 26970 transitions. [2023-04-01 13:34:41,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-01 13:34:41,017 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:34:41,018 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:34:41,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 13:34:41,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:34:41,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:34:41,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1477364739, now seen corresponding path program 1 times [2023-04-01 13:34:41,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:34:41,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395990563] [2023-04-01 13:34:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:41,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:34:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-04-01 13:34:41,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:34:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395990563] [2023-04-01 13:34:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395990563] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 13:34:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651847455] [2023-04-01 13:34:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:34:41,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:34:41,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:34:41,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:34:41,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 13:34:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:34:42,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 3347 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 13:34:42,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:34:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-04-01 13:34:42,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 13:34:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651847455] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:34:42,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 13:34:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-04-01 13:34:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147250607] [2023-04-01 13:34:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:34:42,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 13:34:42,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:34:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 13:34:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 13:34:42,867 INFO L87 Difference]: Start difference. First operand 19380 states and 26970 transitions. Second operand has 6 states, 4 states have (on average 16.25) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-01 13:34:44,893 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 [] [2023-04-01 13:34:46,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:34:48,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []