/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:56:19,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:56:19,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:56:19,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:56:19,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:56:19,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:56:19,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:56:19,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:56:19,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:56:19,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:56:19,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:56:19,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:56:19,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:56:19,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:56:19,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:56:19,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:56:19,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:56:19,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:56:19,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:56:19,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:56:19,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:56:20,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:56:20,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:56:20,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:56:20,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:56:20,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:56:20,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:56:20,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:56:20,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:56:20,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:56:20,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:56:20,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:56:20,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:56:20,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:56:20,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:56:20,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:56:20,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:56:20,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:56:20,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:56:20,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:56:20,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:56:20,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:56:20,027 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:56:20,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:56:20,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:56:20,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:56:20,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:56:20,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:56:20,028 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:56:20,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:56:20,029 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:56:20,029 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:56:20,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:56:20,030 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:56:20,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:56:20,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:56:20,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:56:20,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:56:20,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:56:20,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:56:20,030 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:56:20,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:56:20,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:56:20,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:56:20,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:56:20,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:56:20,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:56:20,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:56:20,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:56:20,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:56:20,192 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:56:20,192 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:56:20,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2023-04-01 12:56:21,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:56:21,587 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:56:21,587 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2023-04-01 12:56:21,610 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2efe53437/47066cd9f6ce4343ae989e2bb42f800f/FLAG4d801b816 [2023-04-01 12:56:21,623 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2efe53437/47066cd9f6ce4343ae989e2bb42f800f [2023-04-01 12:56:21,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:56:21,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:56:21,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:56:21,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:56:21,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:56:21,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:56:21" (1/1) ... [2023-04-01 12:56:21,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3898ad78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:21, skipping insertion in model container [2023-04-01 12:56:21,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:56:21" (1/1) ... [2023-04-01 12:56:21,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:56:21,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:56:22,350 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2023-04-01 12:56:22,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:56:22,419 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:56:22,581 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2023-04-01 12:56:22,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:56:22,710 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:56:22,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22 WrapperNode [2023-04-01 12:56:22,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:56:22,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:56:22,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:56:22,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:56:22,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,814 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:56:22,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:56:22,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:56:22,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:56:22,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (1/1) ... [2023-04-01 12:56:22,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:56:22,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:56:22,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:56:22,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:56:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:56:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:56:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:56:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-01 12:56:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-01 12:56:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 12:56:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-01 12:56:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2023-04-01 12:56:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2023-04-01 12:56:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-04-01 12:56:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-04-01 12:56:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-04-01 12:56:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_usb_dump_class_desc [2023-04-01 12:56:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_usb_find_class_desc [2023-04-01 12:56:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2023-04-01 12:56:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_startup [2023-04-01 12:56:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_open [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_prepare_write_buffer [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_process_read_urb [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_set_termios_callback [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_set_termios [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-04-01 12:56:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-04-01 12:56:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-04-01 12:56:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-04-01 12:56:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-04-01 12:56:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 12:56:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out [2023-04-01 12:56:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out_r [2023-04-01 12:56:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 12:56:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 12:56:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-04-01 12:56:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-01 12:56:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-01 12:56:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-04-01 12:56:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 12:56:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-04-01 12:56:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 12:56:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2023-04-01 12:56:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2023-04-01 12:56:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2023-04-01 12:56:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2023-04-01 12:56:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2023-04-01 12:56:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2023-04-01 12:56:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_copy_hw [2023-04-01 12:56:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-04-01 12:56:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-01 12:56:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-01 12:56:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-04-01 12:56:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_open [2023-04-01 12:56:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-04-01 12:56:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-04-01 12:56:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 12:56:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:56:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:56:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 12:56:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 12:56:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2023-04-01 12:56:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2023-04-01 12:56:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-01 12:56:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2023-04-01 12:56:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2023-04-01 12:56:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2023-04-01 12:56:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2023-04-01 12:56:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_copy_hw [2023-04-01 12:56:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2023-04-01 12:56:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2023-04-01 12:56:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2023-04-01 12:56:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-01 12:56:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2023-04-01 12:56:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out [2023-04-01 12:56:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out_r [2023-04-01 12:56:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-04-01 12:56:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-04-01 12:56:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-04-01 12:56:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-04-01 12:56:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_open [2023-04-01 12:56:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure ir_startup [2023-04-01 12:56:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure ir_open [2023-04-01 12:56:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure ir_prepare_write_buffer [2023-04-01 12:56:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure ir_process_read_urb [2023-04-01 12:56:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure ir_set_termios [2023-04-01 12:56:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure irda_usb_dump_class_desc [2023-04-01 12:56:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure irda_usb_find_class_desc [2023-04-01 12:56:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2023-04-01 12:56:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:56:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure ir_set_termios_callback [2023-04-01 12:56:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2023-04-01 12:56:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2023-04-01 12:56:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 12:56:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-04-01 12:56:22,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 12:56:22,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:56:22,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:56:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-04-01 12:56:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-04-01 12:56:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-04-01 12:56:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 12:56:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:56:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 12:56:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:56:23,257 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:56:23,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:56:23,392 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-01 12:56:23,497 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2023-04-01 12:56:23,497 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2023-04-01 12:56:23,520 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-01 12:56:23,555 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2023-04-01 12:56:23,555 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2023-04-01 12:56:23,778 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-04-01 12:56:23,783 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-01 12:56:23,804 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-04-01 12:56:23,804 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-04-01 12:56:24,149 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-01 12:56:24,238 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##103: assume !false; [2023-04-01 12:56:24,238 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##102: assume false; [2023-04-01 12:56:24,265 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:56:24,619 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:56:24,619 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-04-01 12:56:24,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:56:24 BoogieIcfgContainer [2023-04-01 12:56:24,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:56:24,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:56:24,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:56:24,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:56:24,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:56:21" (1/3) ... [2023-04-01 12:56:24,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a7f553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:56:24, skipping insertion in model container [2023-04-01 12:56:24,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:56:22" (2/3) ... [2023-04-01 12:56:24,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a7f553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:56:24, skipping insertion in model container [2023-04-01 12:56:24,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:56:24" (3/3) ... [2023-04-01 12:56:24,629 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2023-04-01 12:56:24,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:56:24,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:56:24,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:56:24,704 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;@3f912f51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:56:24,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:56:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 220 states have (on average 1.3545454545454545) internal successors, (298), 234 states have internal predecessors, (298), 85 states have call successors, (85), 52 states have call predecessors, (85), 51 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2023-04-01 12:56:24,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 12:56:24,720 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:24,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:24,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:24,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1948637541, now seen corresponding path program 1 times [2023-04-01 12:56:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:24,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050823323] [2023-04-01 12:56:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:24,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:56:25,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:25,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050823323] [2023-04-01 12:56:25,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050823323] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:25,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:25,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:56:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772470048] [2023-04-01 12:56:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:25,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:56:25,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:56:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:25,451 INFO L87 Difference]: Start difference. First operand has 363 states, 220 states have (on average 1.3545454545454545) internal successors, (298), 234 states have internal predecessors, (298), 85 states have call successors, (85), 52 states have call predecessors, (85), 51 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 12:56:25,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:25,970 INFO L93 Difference]: Finished difference Result 911 states and 1221 transitions. [2023-04-01 12:56:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:56:25,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-04-01 12:56:25,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:25,989 INFO L225 Difference]: With dead ends: 911 [2023-04-01 12:56:25,990 INFO L226 Difference]: Without dead ends: 593 [2023-04-01 12:56:25,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:26,000 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 354 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:26,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 656 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:56:26,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-04-01 12:56:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 590. [2023-04-01 12:56:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 362 states have (on average 1.2458563535911602) internal successors, (451), 375 states have internal predecessors, (451), 142 states have call successors, (142), 91 states have call predecessors, (142), 85 states have return successors, (136), 131 states have call predecessors, (136), 136 states have call successors, (136) [2023-04-01 12:56:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 729 transitions. [2023-04-01 12:56:26,084 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 729 transitions. Word has length 24 [2023-04-01 12:56:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:26,084 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 729 transitions. [2023-04-01 12:56:26,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 12:56:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 729 transitions. [2023-04-01 12:56:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-01 12:56:26,085 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:26,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:26,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:56:26,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:26,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:26,086 INFO L85 PathProgramCache]: Analyzing trace with hash -278436467, now seen corresponding path program 1 times [2023-04-01 12:56:26,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:26,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457915799] [2023-04-01 12:56:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:26,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:56:26,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457915799] [2023-04-01 12:56:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457915799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:26,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:26,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:56:26,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39743912] [2023-04-01 12:56:26,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:26,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:56:26,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:26,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:56:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:26,363 INFO L87 Difference]: Start difference. First operand 590 states and 729 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 12:56:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:26,522 INFO L93 Difference]: Finished difference Result 592 states and 730 transitions. [2023-04-01 12:56:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:56:26,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-04-01 12:56:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:26,527 INFO L225 Difference]: With dead ends: 592 [2023-04-01 12:56:26,529 INFO L226 Difference]: Without dead ends: 579 [2023-04-01 12:56:26,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:26,530 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 397 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:26,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 341 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:56:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-04-01 12:56:26,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2023-04-01 12:56:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 358 states have (on average 1.2374301675977655) internal successors, (443), 369 states have internal predecessors, (443), 137 states have call successors, (137), 88 states have call predecessors, (137), 83 states have return successors, (133), 128 states have call predecessors, (133), 133 states have call successors, (133) [2023-04-01 12:56:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 713 transitions. [2023-04-01 12:56:26,581 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 713 transitions. Word has length 25 [2023-04-01 12:56:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:26,582 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 713 transitions. [2023-04-01 12:56:26,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 12:56:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 713 transitions. [2023-04-01 12:56:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 12:56:26,591 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:26,591 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:26,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:56:26,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:26,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:26,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1003991385, now seen corresponding path program 1 times [2023-04-01 12:56:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:26,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387342723] [2023-04-01 12:56:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:26,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:56:27,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:27,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387342723] [2023-04-01 12:56:27,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387342723] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:27,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:27,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:56:27,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772915531] [2023-04-01 12:56:27,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:27,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:56:27,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:56:27,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:56:27,290 INFO L87 Difference]: Start difference. First operand 579 states and 713 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-01 12:56:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:28,401 INFO L93 Difference]: Finished difference Result 1768 states and 2190 transitions. [2023-04-01 12:56:28,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 12:56:28,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 84 [2023-04-01 12:56:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:28,417 INFO L225 Difference]: With dead ends: 1768 [2023-04-01 12:56:28,417 INFO L226 Difference]: Without dead ends: 1451 [2023-04-01 12:56:28,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:56:28,424 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 790 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:28,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2402 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:56:28,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-04-01 12:56:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1415. [2023-04-01 12:56:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 883 states have (on average 1.246885617214043) internal successors, (1101), 916 states have internal predecessors, (1101), 327 states have call successors, (327), 208 states have call predecessors, (327), 204 states have return successors, (335), 307 states have call predecessors, (335), 323 states have call successors, (335) [2023-04-01 12:56:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1763 transitions. [2023-04-01 12:56:28,499 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1763 transitions. Word has length 84 [2023-04-01 12:56:28,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:28,501 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 1763 transitions. [2023-04-01 12:56:28,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-01 12:56:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1763 transitions. [2023-04-01 12:56:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 12:56:28,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:28,503 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:28,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:56:28,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:28,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1826998485, now seen corresponding path program 1 times [2023-04-01 12:56:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:28,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140665797] [2023-04-01 12:56:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:28,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:56:29,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:29,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140665797] [2023-04-01 12:56:29,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140665797] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:29,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:29,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 12:56:29,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144258515] [2023-04-01 12:56:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:56:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:56:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:56:29,367 INFO L87 Difference]: Start difference. First operand 1415 states and 1763 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 7 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-04-01 12:56:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:31,400 INFO L93 Difference]: Finished difference Result 4379 states and 5534 transitions. [2023-04-01 12:56:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 12:56:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 7 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 84 [2023-04-01 12:56:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:31,415 INFO L225 Difference]: With dead ends: 4379 [2023-04-01 12:56:31,415 INFO L226 Difference]: Without dead ends: 3430 [2023-04-01 12:56:31,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:56:31,420 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1061 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:31,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 570 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 12:56:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2023-04-01 12:56:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3365. [2023-04-01 12:56:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2135 states have (on average 1.2533957845433255) internal successors, (2676), 2216 states have internal predecessors, (2676), 761 states have call successors, (761), 471 states have call predecessors, (761), 468 states have return successors, (810), 713 states have call predecessors, (810), 757 states have call successors, (810) [2023-04-01 12:56:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4247 transitions. [2023-04-01 12:56:31,667 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4247 transitions. Word has length 84 [2023-04-01 12:56:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:31,669 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 4247 transitions. [2023-04-01 12:56:31,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 7 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-04-01 12:56:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4247 transitions. [2023-04-01 12:56:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 12:56:31,674 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:31,674 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:31,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:56:31,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:31,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash 44929174, now seen corresponding path program 1 times [2023-04-01 12:56:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:31,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123115826] [2023-04-01 12:56:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:31,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:56:32,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:32,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123115826] [2023-04-01 12:56:32,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123115826] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:32,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:32,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:56:32,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597599192] [2023-04-01 12:56:32,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:32,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:56:32,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:32,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:56:32,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:56:32,040 INFO L87 Difference]: Start difference. First operand 3365 states and 4247 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-01 12:56:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:32,745 INFO L93 Difference]: Finished difference Result 6700 states and 8461 transitions. [2023-04-01 12:56:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:56:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 88 [2023-04-01 12:56:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:32,759 INFO L225 Difference]: With dead ends: 6700 [2023-04-01 12:56:32,759 INFO L226 Difference]: Without dead ends: 3361 [2023-04-01 12:56:32,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:56:32,769 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 2 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1669 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:56:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2023-04-01 12:56:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 3361. [2023-04-01 12:56:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3361 states, 2133 states have (on average 1.252695733708392) internal successors, (2672), 2213 states have internal predecessors, (2672), 760 states have call successors, (760), 470 states have call predecessors, (760), 467 states have return successors, (809), 712 states have call predecessors, (809), 756 states have call successors, (809) [2023-04-01 12:56:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 4241 transitions. [2023-04-01 12:56:32,942 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 4241 transitions. Word has length 88 [2023-04-01 12:56:32,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:32,943 INFO L495 AbstractCegarLoop]: Abstraction has 3361 states and 4241 transitions. [2023-04-01 12:56:32,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-01 12:56:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 4241 transitions. [2023-04-01 12:56:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-01 12:56:32,945 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:32,945 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:32,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:56:32,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:32,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:32,946 INFO L85 PathProgramCache]: Analyzing trace with hash 270987740, now seen corresponding path program 1 times [2023-04-01 12:56:32,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:32,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289776065] [2023-04-01 12:56:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:56:33,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:33,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289776065] [2023-04-01 12:56:33,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289776065] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:33,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:33,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:56:33,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381712217] [2023-04-01 12:56:33,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:33,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:56:33,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:56:33,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:56:33,779 INFO L87 Difference]: Start difference. First operand 3361 states and 4241 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-01 12:56:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:34,959 INFO L93 Difference]: Finished difference Result 5415 states and 6936 transitions. [2023-04-01 12:56:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 12:56:34,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 100 [2023-04-01 12:56:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:34,983 INFO L225 Difference]: With dead ends: 5415 [2023-04-01 12:56:34,983 INFO L226 Difference]: Without dead ends: 5401 [2023-04-01 12:56:34,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:56:34,988 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1376 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:34,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 206 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:56:34,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2023-04-01 12:56:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 5286. [2023-04-01 12:56:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 3367 states have (on average 1.2530442530442532) internal successors, (4219), 3483 states have internal predecessors, (4219), 1186 states have call successors, (1186), 737 states have call predecessors, (1186), 732 states have return successors, (1308), 1109 states have call predecessors, (1308), 1182 states have call successors, (1308) [2023-04-01 12:56:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 6713 transitions. [2023-04-01 12:56:35,331 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 6713 transitions. Word has length 100 [2023-04-01 12:56:35,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:35,332 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 6713 transitions. [2023-04-01 12:56:35,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-01 12:56:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 6713 transitions. [2023-04-01 12:56:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-01 12:56:35,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:35,339 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:35,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:56:35,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:35,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1175264697, now seen corresponding path program 1 times [2023-04-01 12:56:35,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:35,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896165119] [2023-04-01 12:56:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:35,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:56:36,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:36,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896165119] [2023-04-01 12:56:36,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896165119] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:36,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:36,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 12:56:36,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642264401] [2023-04-01 12:56:36,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:36,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 12:56:36,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 12:56:36,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:56:36,391 INFO L87 Difference]: Start difference. First operand 5286 states and 6713 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 12:56:38,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:38,736 INFO L93 Difference]: Finished difference Result 7731 states and 9885 transitions. [2023-04-01 12:56:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 12:56:38,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 103 [2023-04-01 12:56:38,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:38,758 INFO L225 Difference]: With dead ends: 7731 [2023-04-01 12:56:38,758 INFO L226 Difference]: Without dead ends: 7728 [2023-04-01 12:56:38,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:56:38,760 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1665 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:38,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1233 Invalid, 2883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [706 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 12:56:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7728 states. [2023-04-01 12:56:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7728 to 7688. [2023-04-01 12:56:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 4899 states have (on average 1.2545417432129007) internal successors, (6146), 5080 states have internal predecessors, (6146), 1716 states have call successors, (1716), 1049 states have call predecessors, (1716), 1072 states have return successors, (1970), 1621 states have call predecessors, (1970), 1712 states have call successors, (1970) [2023-04-01 12:56:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 9832 transitions. [2023-04-01 12:56:39,173 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 9832 transitions. Word has length 103 [2023-04-01 12:56:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:39,173 INFO L495 AbstractCegarLoop]: Abstraction has 7688 states and 9832 transitions. [2023-04-01 12:56:39,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 12:56:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 9832 transitions. [2023-04-01 12:56:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-01 12:56:39,178 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:39,178 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:56:39,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:56:39,178 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:39,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:39,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1880756433, now seen corresponding path program 1 times [2023-04-01 12:56:39,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:39,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48080879] [2023-04-01 12:56:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:39,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:56:39,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:39,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48080879] [2023-04-01 12:56:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48080879] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:39,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:39,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:56:39,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317576595] [2023-04-01 12:56:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:39,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:56:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:56:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:39,456 INFO L87 Difference]: Start difference. First operand 7688 states and 9832 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-01 12:56:39,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:39,918 INFO L93 Difference]: Finished difference Result 10326 states and 13252 transitions. [2023-04-01 12:56:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:56:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 120 [2023-04-01 12:56:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:39,943 INFO L225 Difference]: With dead ends: 10326 [2023-04-01 12:56:39,943 INFO L226 Difference]: Without dead ends: 5633 [2023-04-01 12:56:39,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:56:39,955 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 5 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:39,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 656 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:56:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5633 states. [2023-04-01 12:56:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5633 to 5633. [2023-04-01 12:56:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5633 states, 3578 states have (on average 1.2434320849636669) internal successors, (4449), 3695 states have internal predecessors, (4449), 1269 states have call successors, (1269), 801 states have call predecessors, (1269), 785 states have return successors, (1391), 1180 states have call predecessors, (1391), 1265 states have call successors, (1391) [2023-04-01 12:56:40,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 7109 transitions. [2023-04-01 12:56:40,322 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 7109 transitions. Word has length 120 [2023-04-01 12:56:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:40,323 INFO L495 AbstractCegarLoop]: Abstraction has 5633 states and 7109 transitions. [2023-04-01 12:56:40,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-01 12:56:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 7109 transitions. [2023-04-01 12:56:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-01 12:56:40,326 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:40,326 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:56:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:56:40,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:40,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash -880474644, now seen corresponding path program 1 times [2023-04-01 12:56:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:40,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059592910] [2023-04-01 12:56:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:40,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 12:56:41,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059592910] [2023-04-01 12:56:41,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059592910] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:56:41,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:56:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:56:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878767165] [2023-04-01 12:56:41,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:56:41,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:56:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:56:41,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:56:41,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:56:41,030 INFO L87 Difference]: Start difference. First operand 5633 states and 7109 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-04-01 12:56:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:56:42,474 INFO L93 Difference]: Finished difference Result 7975 states and 10350 transitions. [2023-04-01 12:56:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 12:56:42,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 122 [2023-04-01 12:56:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:56:42,501 INFO L225 Difference]: With dead ends: 7975 [2023-04-01 12:56:42,501 INFO L226 Difference]: Without dead ends: 7961 [2023-04-01 12:56:42,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:56:42,504 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1016 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:56:42,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 267 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 12:56:42,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7961 states. [2023-04-01 12:56:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7961 to 7511. [2023-04-01 12:56:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7511 states, 4785 states have (on average 1.246394984326019) internal successors, (5964), 4937 states have internal predecessors, (5964), 1689 states have call successors, (1689), 1062 states have call predecessors, (1689), 1036 states have return successors, (1861), 1573 states have call predecessors, (1861), 1685 states have call successors, (1861) [2023-04-01 12:56:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7511 states to 7511 states and 9514 transitions. [2023-04-01 12:56:42,915 INFO L78 Accepts]: Start accepts. Automaton has 7511 states and 9514 transitions. Word has length 122 [2023-04-01 12:56:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:56:42,916 INFO L495 AbstractCegarLoop]: Abstraction has 7511 states and 9514 transitions. [2023-04-01 12:56:42,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-04-01 12:56:42,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7511 states and 9514 transitions. [2023-04-01 12:56:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-01 12:56:42,922 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:56:42,922 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:56:42,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 12:56:42,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:56:42,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:56:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash 727468607, now seen corresponding path program 1 times [2023-04-01 12:56:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:56:42,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300240414] [2023-04-01 12:56:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:42,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:56:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-01 12:56:44,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:56:44,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300240414] [2023-04-01 12:56:44,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300240414] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:56:44,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676703161] [2023-04-01 12:56:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:56:44,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:56:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:56:44,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:56:44,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:56:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:56:45,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 73 conjunts are in the unsatisfiable core [2023-04-01 12:56:45,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:56:45,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-01 12:56:45,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-01 12:56:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 12:56:45,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:56:46,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-04-01 12:56:47,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-04-01 12:56:49,440 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-04-01 12:56:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-04-01 12:56:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676703161] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:56:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [292332682] [2023-04-01 12:56:49,770 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2023-04-01 12:56:49,770 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:56:49,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:56:49,776 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:56:49,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs