/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 06:48:34,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 06:48:34,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 06:48:34,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 06:48:34,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 06:48:34,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 06:48:34,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 06:48:34,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 06:48:34,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 06:48:34,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 06:48:34,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 06:48:34,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 06:48:34,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 06:48:34,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 06:48:34,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 06:48:34,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 06:48:34,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 06:48:34,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 06:48:34,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 06:48:34,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 06:48:34,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 06:48:34,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 06:48:34,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 06:48:34,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 06:48:34,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 06:48:34,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 06:48:34,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 06:48:34,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 06:48:34,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 06:48:34,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 06:48:34,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 06:48:34,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 06:48:34,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 06:48:34,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 06:48:34,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 06:48:34,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 06:48:34,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 06:48:34,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 06:48:34,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 06:48:34,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 06:48:34,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 06:48:34,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 06:48:34,592 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 06:48:34,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 06:48:34,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 06:48:34,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 06:48:34,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 06:48:34,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 06:48:34,594 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 06:48:34,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 06:48:34,594 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 06:48:34,594 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 06:48:34,595 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 06:48:34,595 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 06:48:34,595 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 06:48:34,595 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 06:48:34,595 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 06:48:34,595 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 06:48:34,595 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 06:48:34,595 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 06:48:34,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 06:48:34,596 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 06:48:34,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 06:48:34,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 06:48:34,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 06:48:34,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 06:48:34,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 06:48:34,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 06:48:34,597 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 06:48:34,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 06:48:34,597 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 06:48:34,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 06:48:34,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 06:48:34,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 06:48:34,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 06:48:34,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 06:48:34,598 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 06:48:34,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 06:48:34,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 06:48:34,599 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 06:48:34,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 06:48:34,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 06:48:34,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 06:48:34,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 06:48:34,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 06:48:34,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 06:48:34,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 06:48:34,871 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 06:48:34,871 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 06:48:34,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-04-03 06:48:35,984 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 06:48:36,458 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 06:48:36,458 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-04-03 06:48:36,491 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021ac39ba/64d2c2248ccc437292c3b580a9db816e/FLAGab648f210 [2023-04-03 06:48:36,506 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021ac39ba/64d2c2248ccc437292c3b580a9db816e [2023-04-03 06:48:36,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 06:48:36,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 06:48:36,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 06:48:36,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 06:48:36,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 06:48:36,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 06:48:36" (1/1) ... [2023-04-03 06:48:36,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ac3044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:36, skipping insertion in model container [2023-04-03 06:48:36,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 06:48:36" (1/1) ... [2023-04-03 06:48:36,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 06:48:36,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 06:48:37,706 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2023-04-03 06:48:37,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 06:48:37,789 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 06:48:38,088 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2023-04-03 06:48:38,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 06:48:38,151 WARN L667 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 06:48:38,157 INFO L208 MainTranslator]: Completed translation [2023-04-03 06:48:38,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38 WrapperNode [2023-04-03 06:48:38,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 06:48:38,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 06:48:38,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 06:48:38,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 06:48:38,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 06:48:38,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 06:48:38,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 06:48:38,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 06:48:38,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (1/1) ... [2023-04-03 06:48:38,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 06:48:38,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 06:48:38,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 06:48:38,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 06:48:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 06:48:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 06:48:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 06:48:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-04-03 06:48:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-03 06:48:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-03 06:48:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-03 06:48:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-04-03 06:48:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-04-03 06:48:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2023-04-03 06:48:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2023-04-03 06:48:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-03 06:48:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_5 [2023-04-03 06:48:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_8 [2023-04-03 06:48:38,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_9 [2023-04-03 06:48:38,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_11 [2023-04-03 06:48:38,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_12 [2023-04-03 06:48:38,496 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2023-04-03 06:48:38,496 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-04-03 06:48:38,496 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2023-04-03 06:48:38,496 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-04-03 06:48:38,497 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2023-04-03 06:48:38,497 INFO L138 BoogieDeclarations]: Found implementation of procedure flag_buf_ptr [2023-04-03 06:48:38,497 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2023-04-03 06:48:38,497 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_char [2023-04-03 06:48:38,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-03 06:48:38,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-04-03 06:48:38,498 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-04-03 06:48:38,498 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-04-03 06:48:38,498 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-04-03 06:48:38,498 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2023-04-03 06:48:38,498 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2023-04-03 06:48:38,498 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2023-04-03 06:48:38,498 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2023-04-03 06:48:38,499 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2023-04-03 06:48:38,499 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2023-04-03 06:48:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_transmit_idle [2023-04-03 06:48:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2023-04-03 06:48:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2023-04-03 06:48:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2023-04-03 06:48:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2023-04-03 06:48:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2023-04-03 06:48:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2023-04-03 06:48:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2023-04-03 06:48:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2023-04-03 06:48:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2023-04-03 06:48:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup_device [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2023-04-03 06:48:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_inb_callback [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_oob_callback [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_module_init [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_module_exit [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure invoke_work_1 [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_2 [2023-04-03 06:48:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2023-04-03 06:48:38,504 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-04-03 06:48:38,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_3 [2023-04-03 06:48:38,504 INFO L138 BoogieDeclarations]: Found implementation of procedure work_init_1 [2023-04-03 06:48:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 06:48:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-04-03 06:48:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-04-03 06:48:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-04-03 06:48:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-04-03 06:48:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-03 06:48:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_work_on_15 [2023-04-03 06:48:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_delayed_work_on_16 [2023-04-03 06:48:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_work_on_17 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_18 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_delayed_work_on_19 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_30 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_33 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_34 [2023-04-03 06:48:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_35 [2023-04-03 06:48:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-03 06:48:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-03 06:48:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-03 06:48:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-03 06:48:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-03 06:48:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-04-03 06:48:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2023-04-03 06:48:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-04-03 06:48:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2023-04-03 06:48:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2023-04-03 06:48:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2023-04-03 06:48:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2023-04-03 06:48:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-03 06:48:38,511 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-03 06:48:38,511 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-04-03 06:48:38,514 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-04-03 06:48:38,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 06:48:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 06:48:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_2 [2023-04-03 06:48:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2023-04-03 06:48:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2023-04-03 06:48:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_flags [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2023-04-03 06:48:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister_drivers [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register_drivers [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure autoremove_wake_function [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-03 06:48:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-03 06:48:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 06:48:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 06:48:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-04-03 06:48:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-04-03 06:48:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-04-03 06:48:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_5 [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_8 [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_9 [2023-04-03 06:48:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_11 [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_12 [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure autoremove_wake_function [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-04-03 06:48:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_work_on_15 [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_work_on_17 [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_delayed_work_on_16 [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_delayed_work_on_19 [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_18 [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2023-04-03 06:48:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2023-04-03 06:48:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 06:48:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-04-03 06:48:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure invoke_work_1 [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_2 [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_3 [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure work_init_1 [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure flag_buf_ptr [2023-04-03 06:48:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2023-04-03 06:48:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2023-04-03 06:48:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2023-04-03 06:48:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2023-04-03 06:48:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2023-04-03 06:48:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2023-04-03 06:48:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_flags [2023-04-03 06:48:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2023-04-03 06:48:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2023-04-03 06:48:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_char [2023-04-03 06:48:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_30 [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_33 [2023-04-03 06:48:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_34 [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_35 [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register_drivers [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister_drivers [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure digi_transmit_idle [2023-04-03 06:48:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2023-04-03 06:48:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup_device [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_inb_callback [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_oob_callback [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_module_init [2023-04-03 06:48:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_module_exit [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_2 [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2023-04-03 06:48:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-03 06:48:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-03 06:48:39,120 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 06:48:39,124 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 06:48:39,298 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-03 06:48:49,211 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 06:48:51,141 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 06:48:51,141 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 06:48:51,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 06:48:51 BoogieIcfgContainer [2023-04-03 06:48:51,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 06:48:51,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 06:48:51,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 06:48:51,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 06:48:51,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 06:48:36" (1/3) ... [2023-04-03 06:48:51,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2ca5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 06:48:51, skipping insertion in model container [2023-04-03 06:48:51,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 06:48:38" (2/3) ... [2023-04-03 06:48:51,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2ca5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 06:48:51, skipping insertion in model container [2023-04-03 06:48:51,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 06:48:51" (3/3) ... [2023-04-03 06:48:51,155 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-04-03 06:48:51,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 06:48:51,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 06:48:51,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 06:48:51,275 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;@5aaa168f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 06:48:51,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 06:48:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 1421 states, 843 states have (on average 1.3416370106761566) internal successors, (1131), 882 states have internal predecessors, (1131), 439 states have call successors, (439), 131 states have call predecessors, (439), 130 states have return successors, (434), 427 states have call predecessors, (434), 434 states have call successors, (434) [2023-04-03 06:48:51,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-03 06:48:51,315 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 06:48:51,317 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 06:48:51,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 06:48:51,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 06:48:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1753966339, now seen corresponding path program 1 times [2023-04-03 06:48:51,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 06:48:51,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860177287] [2023-04-03 06:48:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:48:51,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 06:48:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:48:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-03 06:48:52,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 06:48:52,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860177287] [2023-04-03 06:48:52,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860177287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 06:48:52,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 06:48:52,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 06:48:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183336609] [2023-04-03 06:48:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 06:48:52,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 06:48:52,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 06:48:52,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 06:48:52,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 06:48:52,324 INFO L87 Difference]: Start difference. First operand has 1421 states, 843 states have (on average 1.3416370106761566) internal successors, (1131), 882 states have internal predecessors, (1131), 439 states have call successors, (439), 131 states have call predecessors, (439), 130 states have return successors, (434), 427 states have call predecessors, (434), 434 states have call successors, (434) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-04-03 06:48:54,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:48:56,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:48:59,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:01,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 06:49:01,591 INFO L93 Difference]: Finished difference Result 3842 states and 5571 transitions. [2023-04-03 06:49:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 06:49:01,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 161 [2023-04-03 06:49:01,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 06:49:01,628 INFO L225 Difference]: With dead ends: 3842 [2023-04-03 06:49:01,628 INFO L226 Difference]: Without dead ends: 2468 [2023-04-03 06:49:01,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 06:49:01,645 INFO L413 NwaCegarLoop]: 1819 mSDtfsCounter, 1604 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-04-03 06:49:01,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 3426 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 420 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2023-04-03 06:49:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2023-04-03 06:49:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2465. [2023-04-03 06:49:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 1466 states have (on average 1.3219645293315143) internal successors, (1938), 1523 states have internal predecessors, (1938), 760 states have call successors, (760), 240 states have call predecessors, (760), 238 states have return successors, (758), 744 states have call predecessors, (758), 758 states have call successors, (758) [2023-04-03 06:49:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3456 transitions. [2023-04-03 06:49:01,856 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3456 transitions. Word has length 161 [2023-04-03 06:49:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 06:49:01,857 INFO L495 AbstractCegarLoop]: Abstraction has 2465 states and 3456 transitions. [2023-04-03 06:49:01,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-04-03 06:49:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3456 transitions. [2023-04-03 06:49:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-03 06:49:01,868 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 06:49:01,868 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 06:49:01,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 06:49:01,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 06:49:01,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 06:49:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2055453071, now seen corresponding path program 1 times [2023-04-03 06:49:01,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 06:49:01,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493453510] [2023-04-03 06:49:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:49:01,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 06:49:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:49:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-03 06:49:02,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 06:49:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493453510] [2023-04-03 06:49:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493453510] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 06:49:02,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 06:49:02,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 06:49:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068226029] [2023-04-03 06:49:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 06:49:02,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 06:49:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 06:49:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 06:49:02,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 06:49:02,462 INFO L87 Difference]: Start difference. First operand 2465 states and 3456 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-04-03 06:49:04,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:06,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:08,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:10,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 06:49:12,238 INFO L93 Difference]: Finished difference Result 6059 states and 8465 transitions. [2023-04-03 06:49:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 06:49:12,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 161 [2023-04-03 06:49:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 06:49:12,261 INFO L225 Difference]: With dead ends: 6059 [2023-04-03 06:49:12,261 INFO L226 Difference]: Without dead ends: 3645 [2023-04-03 06:49:12,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 06:49:12,274 INFO L413 NwaCegarLoop]: 3032 mSDtfsCounter, 1571 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 4603 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-04-03 06:49:12,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 4603 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 537 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2023-04-03 06:49:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2023-04-03 06:49:12,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3641. [2023-04-03 06:49:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 2163 states have (on average 1.31622746185853) internal successors, (2847), 2250 states have internal predecessors, (2847), 1112 states have call successors, (1112), 367 states have call predecessors, (1112), 365 states have return successors, (1110), 1088 states have call predecessors, (1110), 1110 states have call successors, (1110) [2023-04-03 06:49:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5069 transitions. [2023-04-03 06:49:12,430 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 5069 transitions. Word has length 161 [2023-04-03 06:49:12,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 06:49:12,432 INFO L495 AbstractCegarLoop]: Abstraction has 3641 states and 5069 transitions. [2023-04-03 06:49:12,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-04-03 06:49:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 5069 transitions. [2023-04-03 06:49:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-04-03 06:49:12,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 06:49:12,438 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 06:49:12,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 06:49:12,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 06:49:12,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 06:49:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2014574472, now seen corresponding path program 1 times [2023-04-03 06:49:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 06:49:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626356945] [2023-04-03 06:49:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:49:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 06:49:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:49:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-04-03 06:49:13,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 06:49:13,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626356945] [2023-04-03 06:49:13,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626356945] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 06:49:13,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 06:49:13,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 06:49:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688080974] [2023-04-03 06:49:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 06:49:13,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 06:49:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 06:49:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 06:49:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 06:49:13,030 INFO L87 Difference]: Start difference. First operand 3641 states and 5069 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-03 06:49:15,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:16,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:19,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:21,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:23,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 06:49:24,187 INFO L93 Difference]: Finished difference Result 9009 states and 12572 transitions. [2023-04-03 06:49:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 06:49:24,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 281 [2023-04-03 06:49:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 06:49:24,222 INFO L225 Difference]: With dead ends: 9009 [2023-04-03 06:49:24,223 INFO L226 Difference]: Without dead ends: 5423 [2023-04-03 06:49:24,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 06:49:24,241 INFO L413 NwaCegarLoop]: 1897 mSDtfsCounter, 1667 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 77 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-04-03 06:49:24,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1667 Valid, 3479 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 457 Invalid, 4 Unknown, 0 Unchecked, 10.9s Time] [2023-04-03 06:49:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2023-04-03 06:49:24,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 5420. [2023-04-03 06:49:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 3261 states have (on average 1.3026678932842686) internal successors, (4248), 3386 states have internal predecessors, (4248), 1607 states have call successors, (1607), 553 states have call predecessors, (1607), 551 states have return successors, (1605), 1575 states have call predecessors, (1605), 1605 states have call successors, (1605) [2023-04-03 06:49:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 7460 transitions. [2023-04-03 06:49:24,491 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 7460 transitions. Word has length 281 [2023-04-03 06:49:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 06:49:24,493 INFO L495 AbstractCegarLoop]: Abstraction has 5420 states and 7460 transitions. [2023-04-03 06:49:24,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-03 06:49:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 7460 transitions. [2023-04-03 06:49:24,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-04-03 06:49:24,498 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 06:49:24,498 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 06:49:24,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 06:49:24,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 06:49:24,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 06:49:24,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1978906092, now seen corresponding path program 1 times [2023-04-03 06:49:24,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 06:49:24,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424267549] [2023-04-03 06:49:24,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:49:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 06:49:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:49:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-04-03 06:49:25,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 06:49:25,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424267549] [2023-04-03 06:49:25,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424267549] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 06:49:25,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 06:49:25,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 06:49:25,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576300172] [2023-04-03 06:49:25,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 06:49:25,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 06:49:25,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 06:49:25,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 06:49:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 06:49:25,046 INFO L87 Difference]: Start difference. First operand 5420 states and 7460 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-03 06:49:27,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:29,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:31,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:33,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:35,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 06:49:37,176 INFO L93 Difference]: Finished difference Result 13274 states and 18316 transitions. [2023-04-03 06:49:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 06:49:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 281 [2023-04-03 06:49:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 06:49:37,226 INFO L225 Difference]: With dead ends: 13274 [2023-04-03 06:49:37,226 INFO L226 Difference]: Without dead ends: 7909 [2023-04-03 06:49:37,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 06:49:37,254 INFO L413 NwaCegarLoop]: 2481 mSDtfsCounter, 1655 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 83 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-04-03 06:49:37,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 4064 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 520 Invalid, 5 Unknown, 0 Unchecked, 11.9s Time] [2023-04-03 06:49:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2023-04-03 06:49:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 7905. [2023-04-03 06:49:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7905 states, 4826 states have (on average 1.288437629506838) internal successors, (6218), 5000 states have internal predecessors, (6218), 2265 states have call successors, (2265), 815 states have call predecessors, (2265), 813 states have return successors, (2263), 2223 states have call predecessors, (2263), 2263 states have call successors, (2263) [2023-04-03 06:49:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7905 states to 7905 states and 10746 transitions. [2023-04-03 06:49:37,700 INFO L78 Accepts]: Start accepts. Automaton has 7905 states and 10746 transitions. Word has length 281 [2023-04-03 06:49:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 06:49:37,703 INFO L495 AbstractCegarLoop]: Abstraction has 7905 states and 10746 transitions. [2023-04-03 06:49:37,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-03 06:49:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 7905 states and 10746 transitions. [2023-04-03 06:49:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-04-03 06:49:37,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 06:49:37,708 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 06:49:37,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 06:49:37,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 06:49:37,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 06:49:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1459707505, now seen corresponding path program 1 times [2023-04-03 06:49:37,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 06:49:37,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243657446] [2023-04-03 06:49:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:49:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 06:49:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:49:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-04-03 06:49:38,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 06:49:38,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243657446] [2023-04-03 06:49:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243657446] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 06:49:38,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 06:49:38,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 06:49:38,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337380960] [2023-04-03 06:49:38,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 06:49:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 06:49:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 06:49:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 06:49:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 06:49:38,650 INFO L87 Difference]: Start difference. First operand 7905 states and 10746 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-03 06:49:40,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:42,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:44,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:46,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:47,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 06:49:47,930 INFO L93 Difference]: Finished difference Result 8064 states and 10920 transitions. [2023-04-03 06:49:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 06:49:47,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 282 [2023-04-03 06:49:47,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 06:49:47,987 INFO L225 Difference]: With dead ends: 8064 [2023-04-03 06:49:47,987 INFO L226 Difference]: Without dead ends: 8061 [2023-04-03 06:49:47,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 06:49:47,994 INFO L413 NwaCegarLoop]: 1809 mSDtfsCounter, 1575 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-04-03 06:49:47,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3878 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2023-04-03 06:49:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8061 states. [2023-04-03 06:49:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8061 to 7999. [2023-04-03 06:49:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7999 states, 4881 states have (on average 1.2851874615857406) internal successors, (6273), 5055 states have internal predecessors, (6273), 2278 states have call successors, (2278), 849 states have call predecessors, (2278), 839 states have return successors, (2276), 2228 states have call predecessors, (2276), 2276 states have call successors, (2276) [2023-04-03 06:49:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 10827 transitions. [2023-04-03 06:49:48,416 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 10827 transitions. Word has length 282 [2023-04-03 06:49:48,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 06:49:48,418 INFO L495 AbstractCegarLoop]: Abstraction has 7999 states and 10827 transitions. [2023-04-03 06:49:48,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-03 06:49:48,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 10827 transitions. [2023-04-03 06:49:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-04-03 06:49:48,423 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 06:49:48,423 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 06:49:48,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 06:49:48,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 06:49:48,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 06:49:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash -31789425, now seen corresponding path program 1 times [2023-04-03 06:49:48,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 06:49:48,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688593157] [2023-04-03 06:49:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:49:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 06:49:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:49:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2023-04-03 06:49:49,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 06:49:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688593157] [2023-04-03 06:49:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688593157] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 06:49:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966106566] [2023-04-03 06:49:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:49:49,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 06:49:49,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 06:49:49,395 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) [2023-04-03 06:49:49,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 06:49:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:49:50,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 3966 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-03 06:49:50,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 06:49:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2023-04-03 06:49:50,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 06:49:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966106566] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 06:49:50,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 06:49:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-04-03 06:49:50,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019635268] [2023-04-03 06:49:50,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 06:49:50,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 06:49:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 06:49:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 06:49:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-03 06:49:50,964 INFO L87 Difference]: Start difference. First operand 7999 states and 10827 transitions. Second operand has 6 states, 4 states have (on average 20.5) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-04-03 06:49:53,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:54,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:56,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:49:58,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:50:00,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:50:02,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:50:04,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:50:06,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:50:08,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:50:10,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-03 06:50:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 06:50:12,484 INFO L93 Difference]: Finished difference Result 15975 states and 21636 transitions. [2023-04-03 06:50:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 06:50:12,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 20.5) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 295 [2023-04-03 06:50:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 06:50:12,524 INFO L225 Difference]: With dead ends: 15975 [2023-04-03 06:50:12,524 INFO L226 Difference]: Without dead ends: 8000 [2023-04-03 06:50:12,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-03 06:50:12,556 INFO L413 NwaCegarLoop]: 1785 mSDtfsCounter, 3 mSDsluCounter, 7115 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 8 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8900 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-04-03 06:50:12,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8900 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 723 Invalid, 8 Unknown, 0 Unchecked, 21.2s Time] [2023-04-03 06:50:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8000 states. [2023-04-03 06:50:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8000 to 8000. [2023-04-03 06:50:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8000 states, 4882 states have (on average 1.2851290454731668) internal successors, (6274), 5056 states have internal predecessors, (6274), 2278 states have call successors, (2278), 849 states have call predecessors, (2278), 839 states have return successors, (2276), 2228 states have call predecessors, (2276), 2276 states have call successors, (2276) [2023-04-03 06:50:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8000 states to 8000 states and 10828 transitions. [2023-04-03 06:50:12,890 INFO L78 Accepts]: Start accepts. Automaton has 8000 states and 10828 transitions. Word has length 295 [2023-04-03 06:50:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 06:50:12,890 INFO L495 AbstractCegarLoop]: Abstraction has 8000 states and 10828 transitions. [2023-04-03 06:50:12,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 20.5) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-04-03 06:50:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8000 states and 10828 transitions. [2023-04-03 06:50:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-04-03 06:50:12,894 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 06:50:12,895 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 06:50:12,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 06:50:13,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-03 06:50:13,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 06:50:13,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 06:50:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1355656423, now seen corresponding path program 1 times [2023-04-03 06:50:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 06:50:13,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509696608] [2023-04-03 06:50:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:50:13,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 06:50:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:50:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-04-03 06:50:14,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 06:50:14,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509696608] [2023-04-03 06:50:14,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509696608] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 06:50:14,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146437459] [2023-04-03 06:50:14,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 06:50:14,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 06:50:14,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 06:50:14,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 06:50:14,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 06:50:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 06:50:16,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 4101 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-03 06:50:16,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 06:50:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 400 proven. 1 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2023-04-03 06:50:16,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 06:50:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-04-03 06:50:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146437459] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 06:50:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [449689655] [2023-04-03 06:50:17,131 INFO L159 IcfgInterpreter]: Started Sifa with 127 locations of interest [2023-04-03 06:50:17,131 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 06:50:17,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 06:50:17,138 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 06:50:17,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 06:50:35,825 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 211 for LOIs [2023-04-03 06:50:41,491 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 212 for LOIs [2023-04-03 06:50:42,559 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2023-04-03 06:50:44,302 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9