/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 IntervalDomain -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 01:23:35,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 01:23:35,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 01:23:35,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 01:23:35,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 01:23:35,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 01:23:35,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 01:23:35,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 01:23:35,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 01:23:35,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 01:23:35,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 01:23:35,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 01:23:35,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 01:23:35,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 01:23:35,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 01:23:35,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 01:23:35,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 01:23:35,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 01:23:35,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 01:23:35,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 01:23:35,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 01:23:35,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 01:23:35,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 01:23:35,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 01:23:35,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 01:23:35,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 01:23:35,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 01:23:35,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 01:23:35,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 01:23:35,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 01:23:35,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 01:23:35,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 01:23:35,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 01:23:35,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 01:23:35,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 01:23:35,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 01:23:35,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 01:23:35,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 01:23:35,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 01:23:35,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 01:23:35,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 01:23:35,568 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 01:23:35,595 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 01:23:35,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 01:23:35,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 01:23:35,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 01:23:35,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 01:23:35,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 01:23:35,596 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 01:23:35,596 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 01:23:35,596 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 01:23:35,596 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 01:23:35,597 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 01:23:35,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 01:23:35,597 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 01:23:35,597 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 01:23:35,597 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 01:23:35,597 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 01:23:35,597 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 01:23:35,598 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 01:23:35,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 01:23:35,598 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 01:23:35,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 01:23:35,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 01:23:35,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 01:23:35,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 01:23:35,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 01:23:35,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 01:23:35,599 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 01:23:35,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 01:23:35,599 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 01:23:35,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 01:23:35,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 01:23:35,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 01:23:35,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 01:23:35,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 01:23:35,600 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 01:23:35,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 01:23:35,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 01:23:35,600 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 01:23:35,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 01:23:35,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 01:23:35,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 01:23:35,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 01:23:35,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 01:23:35,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 01:23:35,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 01:23:35,835 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 01:23:35,836 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 01:23:35,837 INFO L432 ainManager$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 01:23:36,847 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 01:23:37,194 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 01:23:37,194 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 01:23:37,224 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39bf78f9/35f34b6be4a446598985d2a522363a17/FLAG754c2720c [2023-04-01 01:23:37,237 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39bf78f9/35f34b6be4a446598985d2a522363a17 [2023-04-01 01:23:37,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 01:23:37,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 01:23:37,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 01:23:37,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 01:23:37,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 01:23:37,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:23:37" (1/1) ... [2023-04-01 01:23:37,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2787f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:37, skipping insertion in model container [2023-04-01 01:23:37,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:23:37" (1/1) ... [2023-04-01 01:23:37,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 01:23:37,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 01:23:38,503 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 01:23:38,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 01:23:38,578 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 01:23:38,783 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 01:23:38,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 01:23:38,839 WARN L667 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 01:23:38,839 WARN L667 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 01:23:38,844 INFO L208 MainTranslator]: Completed translation [2023-04-01 01:23:38,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38 WrapperNode [2023-04-01 01:23:38,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 01:23:38,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 01:23:38,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 01:23:38,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 01:23:38,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:38,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:38,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:38,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:38,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:38,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:39,013 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:39,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:39,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 01:23:39,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 01:23:39,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 01:23:39,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 01:23:39,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (1/1) ... [2023-04-01 01:23:39,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 01:23:39,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:23:39,077 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 01:23:39,096 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 01:23:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~gfp_t~0~TO~$Pointer$ [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~gfp_t~0~TO~int [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-04-01 01:23:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2023-04-01 01:23:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-04-01 01:23:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 01:23:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2023-04-01 01:23:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-04-01 01:23:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-04-01 01:23:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_alloc_request [2023-04-01 01:23:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-04-01 01:23:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-04-01 01:23:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_selfpowered [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_controller_number [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure utf8_to_utf16le [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_get_string [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_descriptor_fillbuf [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_config_buf [2023-04-01 01:23:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_copy_descriptors [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_find_endpoint [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_matches [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig_reset [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_complete [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_read [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-04-01 01:23:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_ioctl [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_set_config [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure config_buf [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-04-01 01:23:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-04-01 01:23:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-04-01 01:23:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_disconnect [2023-04-01 01:23:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-04-01 01:23:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-04-01 01:23:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 01:23:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_gadget_driver_1 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cdev_del_7 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cdev_init_8 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_chrdev_region_9 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_10 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_gadget_register_driver_11 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_12 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region_13 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_class_destroy_14 [2023-04-01 01:23:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region_15 [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_gadget_unregister_driver_16 [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_create_class [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_class [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-04-01 01:23:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_region [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_usb_gadget [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_usb_gadget [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2023-04-01 01:23:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_chrdev_region [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-04-01 01:23:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_register_driver [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_unregister_driver [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-04-01 01:23:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure autoremove_wake_function [2023-04-01 01:23:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 01:23:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-01 01:23:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 01:23:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_prefetch [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-04-01 01:23:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_create_class [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_region [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_usb_gadget [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_usb_gadget [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-04-01 01:23:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-04-01 01:23:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-04-01 01:23:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure autoremove_wake_function [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 01:23:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_gadget_driver_1 [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-04-01 01:23:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_10 [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_12 [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_class_destroy_14 [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_chrdev_region [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_chrdev_region_9 [2023-04-01 01:23:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region_13 [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region_15 [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cdev_init_8 [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cdev_del_7 [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-04-01 01:23:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_alloc_request [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~gfp_t~0~TO~$Pointer$ [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~gfp_t~0~TO~int [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_selfpowered [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_register_driver [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_gadget_register_driver_11 [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_unregister_driver [2023-04-01 01:23:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_gadget_unregister_driver_16 [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_get_string [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_descriptor_fillbuf [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_config_buf [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_copy_descriptors [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_endpoint [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig_reset [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_controller_number [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure utf8_to_utf16le [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure ep_matches [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-04-01 01:23:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure tx_complete [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_read [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_ioctl [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure printer_set_config [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure config_buf [2023-04-01 01:23:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure printer_disconnect [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-01 01:23:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_class [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-01 01:23:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-01 01:23:39,703 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 01:23:39,707 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 01:23:40,061 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 01:23:54,686 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 01:23:55,298 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 01:23:55,298 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 01:23:55,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:23:55 BoogieIcfgContainer [2023-04-01 01:23:55,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 01:23:55,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 01:23:55,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 01:23:55,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 01:23:55,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:23:37" (1/3) ... [2023-04-01 01:23:55,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399cf8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:23:55, skipping insertion in model container [2023-04-01 01:23:55,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:23:38" (2/3) ... [2023-04-01 01:23:55,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399cf8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:23:55, skipping insertion in model container [2023-04-01 01:23:55,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:23:55" (3/3) ... [2023-04-01 01:23:55,307 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 01:23:55,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 01:23:55,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 01:23:55,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 01:23:55,375 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;@59febb73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 01:23:55,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 01:23:55,382 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 01:23:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-01 01:23:55,392 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:55,393 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 01:23:55,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:55,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash 428047914, now seen corresponding path program 1 times [2023-04-01 01:23:55,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:55,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173278126] [2023-04-01 01:23:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:55,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:56,198 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 01:23:56,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:56,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173278126] [2023-04-01 01:23:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173278126] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:56,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:23:56,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511617040] [2023-04-01 01:23:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:23:56,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:23:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:56,246 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 01:23:58,298 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 01:24:00,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:24:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:24:01,967 INFO L93 Difference]: Finished difference Result 3886 states and 5411 transitions. [2023-04-01 01:24:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:24:01,972 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 01:24:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:24:02,014 INFO L225 Difference]: With dead ends: 3886 [2023-04-01 01:24:02,015 INFO L226 Difference]: Without dead ends: 2529 [2023-04-01 01:24:02,028 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 01:24:02,031 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1761 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s 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, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 01:24:02,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 3294 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 01:24:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2023-04-01 01:24:02,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2523. [2023-04-01 01:24:02,215 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 01:24:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3485 transitions. [2023-04-01 01:24:02,236 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3485 transitions. Word has length 145 [2023-04-01 01:24:02,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:24:02,239 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 3485 transitions. [2023-04-01 01:24:02,239 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 01:24:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3485 transitions. [2023-04-01 01:24:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 01:24:02,250 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:24:02,250 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 01:24:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 01:24:02,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:24:02,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:24:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash -995001569, now seen corresponding path program 1 times [2023-04-01 01:24:02,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:24:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581922298] [2023-04-01 01:24:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:24:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:24:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:24:02,870 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 01:24:02,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:24:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581922298] [2023-04-01 01:24:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581922298] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:24:02,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:24:02,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:24:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044474637] [2023-04-01 01:24:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:24:02,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:24:02,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:24:02,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:24:02,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:24:02,876 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 01:24:04,909 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 01:24:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:24:06,390 INFO L93 Difference]: Finished difference Result 4950 states and 6862 transitions. [2023-04-01 01:24:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:24:06,390 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 01:24:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:24:06,422 INFO L225 Difference]: With dead ends: 4950 [2023-04-01 01:24:06,422 INFO L226 Difference]: Without dead ends: 4919 [2023-04-01 01:24:06,427 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 01:24:06,428 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 1802 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 01:24:06,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 3258 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 352 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 01:24:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2023-04-01 01:24:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4915. [2023-04-01 01:24:06,723 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 01:24:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 6816 transitions. [2023-04-01 01:24:06,748 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 6816 transitions. Word has length 146 [2023-04-01 01:24:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:24:06,749 INFO L495 AbstractCegarLoop]: Abstraction has 4915 states and 6816 transitions. [2023-04-01 01:24:06,750 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 01:24:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 6816 transitions. [2023-04-01 01:24:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 01:24:06,752 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:24:06,752 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 01:24:06,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 01:24:06,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:24:06,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:24:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash -782705687, now seen corresponding path program 1 times [2023-04-01 01:24:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:24:06,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574637023] [2023-04-01 01:24:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:24:06,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:24:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:24:07,380 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 01:24:07,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:24:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574637023] [2023-04-01 01:24:07,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574637023] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:24:07,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:24:07,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:24:07,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069532300] [2023-04-01 01:24:07,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:24:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:24:07,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:24:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:24:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:24:07,382 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 01:24:09,410 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 01:24:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:24:11,002 INFO L93 Difference]: Finished difference Result 14618 states and 20309 transitions. [2023-04-01 01:24:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:24:11,003 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 01:24:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:24:11,062 INFO L225 Difference]: With dead ends: 14618 [2023-04-01 01:24:11,063 INFO L226 Difference]: Without dead ends: 9737 [2023-04-01 01:24:11,087 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 01:24:11,090 INFO L413 NwaCegarLoop]: 1823 mSDtfsCounter, 1799 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 01:24:11,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 3400 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 361 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 01:24:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9737 states. [2023-04-01 01:24:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9737 to 9726. [2023-04-01 01:24:11,546 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 01:24:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9726 states to 9726 states and 13508 transitions. [2023-04-01 01:24:11,592 INFO L78 Accepts]: Start accepts. Automaton has 9726 states and 13508 transitions. Word has length 147 [2023-04-01 01:24:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:24:11,592 INFO L495 AbstractCegarLoop]: Abstraction has 9726 states and 13508 transitions. [2023-04-01 01:24:11,593 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 01:24:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 9726 states and 13508 transitions. [2023-04-01 01:24:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-04-01 01:24:11,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:24:11,599 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 01:24:11,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 01:24:11,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:24:11,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:24:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -651313781, now seen corresponding path program 1 times [2023-04-01 01:24:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:24:11,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115622114] [2023-04-01 01:24:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:24:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:24:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:24:12,152 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 01:24:12,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:24:12,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115622114] [2023-04-01 01:24:12,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115622114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:24:12,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:24:12,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 01:24:12,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379328128] [2023-04-01 01:24:12,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:24:12,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 01:24:12,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:24:12,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 01:24:12,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 01:24:12,154 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 01:24:14,183 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 01:24:16,201 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 01:24:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:24:28,701 INFO L93 Difference]: Finished difference Result 29737 states and 41547 transitions. [2023-04-01 01:24:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 01:24:28,705 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 01:24:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:24:28,799 INFO L225 Difference]: With dead ends: 29737 [2023-04-01 01:24:28,800 INFO L226 Difference]: Without dead ends: 20041 [2023-04-01 01:24:28,837 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 01:24:28,838 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 3284 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 1687 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s 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, 15.5s IncrementalHoareTripleChecker+Time [2023-04-01 01:24:28,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3674 Valid, 599 Invalid, 5064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1687 Valid, 3375 Invalid, 2 Unknown, 0 Unchecked, 15.5s Time] [2023-04-01 01:24:28,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20041 states. [2023-04-01 01:24:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20041 to 19380. [2023-04-01 01:24:29,723 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 01:24:29,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19380 states to 19380 states and 26970 transitions. [2023-04-01 01:24:29,795 INFO L78 Accepts]: Start accepts. Automaton has 19380 states and 26970 transitions. Word has length 176 [2023-04-01 01:24:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:24:29,797 INFO L495 AbstractCegarLoop]: Abstraction has 19380 states and 26970 transitions. [2023-04-01 01:24:29,797 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 01:24:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 19380 states and 26970 transitions. [2023-04-01 01:24:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-01 01:24:29,801 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:24:29,801 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 01:24:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 01:24:29,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:24:29,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:24:29,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1477364739, now seen corresponding path program 1 times [2023-04-01 01:24:29,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:24:29,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66612322] [2023-04-01 01:24:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:24:29,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:24:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:24:30,574 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 01:24:30,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:24:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66612322] [2023-04-01 01:24:30,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66612322] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 01:24:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191072768] [2023-04-01 01:24:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:24:30,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 01:24:30,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:24:30,582 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 01:24:30,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process