/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:41:13,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:41:13,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:41:13,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:41:13,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:41:13,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:41:13,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:41:13,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:41:13,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:41:13,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:41:13,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:41:13,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 03:41:13,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 03:41:13,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 03:41:13,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 03:41:13,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 03:41:13,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 03:41:13,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 03:41:13,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 03:41:14,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 03:41:14,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 03:41:14,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 03:41:14,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 03:41:14,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 03:41:14,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 03:41:14,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 03:41:14,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 03:41:14,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 03:41:14,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 03:41:14,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 03:41:14,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 03:41:14,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 03:41:14,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 03:41:14,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 03:41:14,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 03:41:14,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 03:41:14,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 03:41:14,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 03:41:14,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:41:14,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:41:14,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:41:14,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 03:41:14,044 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:41:14,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:41:14,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:41:14,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:41:14,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:41:14,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:41:14,046 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:41:14,046 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:41:14,046 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:41:14,046 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:41:14,047 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:41:14,047 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:41:14,047 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:41:14,047 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:41:14,047 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:41:14,047 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:41:14,047 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:41:14,047 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:41:14,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:41:14,048 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:41:14,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:41:14,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:41:14,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:41:14,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:41:14,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:41:14,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:41:14,048 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:41:14,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:41:14,049 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:41:14,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:41:14,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:41:14,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:41:14,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:41:14,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:41:14,049 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:41:14,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:41:14,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:41:14,050 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:41:14,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:41:14,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:41:14,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:41:14,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:41:14,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:41:14,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:41:14,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:41:14,251 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:41:14,251 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:41:14,252 INFO L432 ainManager$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 [2023-04-03 03:41:15,279 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:41:15,539 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:41:15,539 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 [2023-04-03 03:41:15,560 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b1d1e6e8/928cdfaad58041de90b6bb55b8f57e7e/FLAGc240e31cc [2023-04-03 03:41:15,570 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b1d1e6e8/928cdfaad58041de90b6bb55b8f57e7e [2023-04-03 03:41:15,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:41:15,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:41:15,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:41:15,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:41:15,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:41:15,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:41:15" (1/1) ... [2023-04-03 03:41:15,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcbac32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:15, skipping insertion in model container [2023-04-03 03:41:15,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:41:15" (1/1) ... [2023-04-03 03:41:15,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:41:15,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:41:16,294 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] [2023-04-03 03:41:16,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:41:16,359 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:41:16,483 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] [2023-04-03 03:41:16,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:41:16,527 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:41:16,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16 WrapperNode [2023-04-03 03:41:16,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:41:16,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:41:16,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:41:16,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:41:16,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,654 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:41:16,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:41:16,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:41:16,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:41:16,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (1/1) ... [2023-04-03 03:41:16,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:41:16,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:41:16,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 03:41:16,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 03:41:16,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:41:16,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_usb_dump_class_desc [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_usb_find_class_desc [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2023-04-03 03:41:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_startup [2023-04-03 03:41:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_open [2023-04-03 03:41:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_prepare_write_buffer [2023-04-03 03:41:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_process_read_urb [2023-04-03 03:41:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_set_termios_callback [2023-04-03 03:41:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_set_termios [2023-04-03 03:41:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2023-04-03 03:41:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out [2023-04-03 03:41:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out_r [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-04-03 03:41:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-03 03:41:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2023-04-03 03:41:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2023-04-03 03:41:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2023-04-03 03:41:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2023-04-03 03:41:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2023-04-03 03:41:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2023-04-03 03:41:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_copy_hw [2023-04-03 03:41:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-04-03 03:41:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-03 03:41:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-03 03:41:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-04-03 03:41:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_open [2023-04-03 03:41:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-04-03 03:41:16,750 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-04-03 03:41:16,750 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 03:41:16,750 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:41:16,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:41:16,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2023-04-03 03:41:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-03 03:41:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2023-04-03 03:41:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2023-04-03 03:41:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2023-04-03 03:41:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2023-04-03 03:41:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_copy_hw [2023-04-03 03:41:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-04-03 03:41:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out_r [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_open [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure ir_startup [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure ir_open [2023-04-03 03:41:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure ir_prepare_write_buffer [2023-04-03 03:41:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure ir_process_read_urb [2023-04-03 03:41:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure ir_set_termios [2023-04-03 03:41:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure irda_usb_dump_class_desc [2023-04-03 03:41:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure irda_usb_find_class_desc [2023-04-03 03:41:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2023-04-03 03:41:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 03:41:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure ir_set_termios_callback [2023-04-03 03:41:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2023-04-03 03:41:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2023-04-03 03:41:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 03:41:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-04-03 03:41:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 03:41:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 03:41:16,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:41:16,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-04-03 03:41:16,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:41:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:41:16,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 03:41:16,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:41:17,093 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:41:17,096 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:41:17,198 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-03 03:41:17,322 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2023-04-03 03:41:17,323 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2023-04-03 03:41:17,357 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-03 03:41:17,394 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2023-04-03 03:41:17,394 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2023-04-03 03:41:17,756 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-04-03 03:41:17,760 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-03 03:41:17,790 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-04-03 03:41:17,791 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-04-03 03:41:18,121 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-04-03 03:41:18,223 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##103: assume !false; [2023-04-03 03:41:18,223 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##102: assume false; [2023-04-03 03:41:18,248 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:41:18,589 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:41:18,589 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-04-03 03:41:18,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:41:18 BoogieIcfgContainer [2023-04-03 03:41:18,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:41:18,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:41:18,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:41:18,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:41:18,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:41:15" (1/3) ... [2023-04-03 03:41:18,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6079d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:41:18, skipping insertion in model container [2023-04-03 03:41:18,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:41:16" (2/3) ... [2023-04-03 03:41:18,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6079d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:41:18, skipping insertion in model container [2023-04-03 03:41:18,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:41:18" (3/3) ... [2023-04-03 03:41:18,599 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2023-04-03 03:41:18,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:41:18,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 03:41:18,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:41:18,716 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;@36e8b89a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:41:18,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 03:41:18,723 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) [2023-04-03 03:41:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-03 03:41:18,730 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:18,730 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] [2023-04-03 03:41:18,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:18,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1948637541, now seen corresponding path program 1 times [2023-04-03 03:41:18,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:18,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905887769] [2023-04-03 03:41:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:18,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:41:19,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:19,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905887769] [2023-04-03 03:41:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905887769] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:19,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:41:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721728114] [2023-04-03 03:41:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:19,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:41:19,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:41:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:41:19,432 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) [2023-04-03 03:41:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:19,848 INFO L93 Difference]: Finished difference Result 911 states and 1221 transitions. [2023-04-03 03:41:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:41:19,850 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 [2023-04-03 03:41:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:19,860 INFO L225 Difference]: With dead ends: 911 [2023-04-03 03:41:19,860 INFO L226 Difference]: Without dead ends: 593 [2023-04-03 03:41:19,885 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 [2023-04-03 03:41:19,887 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 354 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:41:19,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 656 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:41:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-04-03 03:41:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 590. [2023-04-03 03:41:19,943 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) [2023-04-03 03:41:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 729 transitions. [2023-04-03 03:41:19,952 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 729 transitions. Word has length 24 [2023-04-03 03:41:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:19,953 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 729 transitions. [2023-04-03 03:41:19,953 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) [2023-04-03 03:41:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 729 transitions. [2023-04-03 03:41:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-03 03:41:19,954 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:19,954 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] [2023-04-03 03:41:19,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:41:19,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:19,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash -278436467, now seen corresponding path program 1 times [2023-04-03 03:41:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352411360] [2023-04-03 03:41:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:41:20,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:20,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352411360] [2023-04-03 03:41:20,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352411360] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:20,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:20,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:41:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211995987] [2023-04-03 03:41:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:20,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:41:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:20,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:41:20,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:41:20,121 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) [2023-04-03 03:41:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:20,281 INFO L93 Difference]: Finished difference Result 592 states and 730 transitions. [2023-04-03 03:41:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:41:20,282 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 [2023-04-03 03:41:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:20,288 INFO L225 Difference]: With dead ends: 592 [2023-04-03 03:41:20,290 INFO L226 Difference]: Without dead ends: 579 [2023-04-03 03:41:20,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:41:20,293 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 [2023-04-03 03:41:20,293 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] [2023-04-03 03:41:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-04-03 03:41:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2023-04-03 03:41:20,335 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) [2023-04-03 03:41:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 713 transitions. [2023-04-03 03:41:20,337 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 713 transitions. Word has length 25 [2023-04-03 03:41:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:20,338 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 713 transitions. [2023-04-03 03:41:20,338 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) [2023-04-03 03:41:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 713 transitions. [2023-04-03 03:41:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 03:41:20,347 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:20,347 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] [2023-04-03 03:41:20,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:41:20,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:20,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1003991385, now seen corresponding path program 1 times [2023-04-03 03:41:20,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:20,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818512976] [2023-04-03 03:41:20,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:20,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:41:20,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818512976] [2023-04-03 03:41:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818512976] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:20,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:20,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:41:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366814685] [2023-04-03 03:41:20,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:20,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:41:20,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:41:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:41:20,932 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) [2023-04-03 03:41:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:22,119 INFO L93 Difference]: Finished difference Result 1768 states and 2190 transitions. [2023-04-03 03:41:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 03:41:22,119 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 [2023-04-03 03:41:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:22,125 INFO L225 Difference]: With dead ends: 1768 [2023-04-03 03:41:22,125 INFO L226 Difference]: Without dead ends: 1451 [2023-04-03 03:41:22,126 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 [2023-04-03 03:41:22,127 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 790 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2023-04-03 03:41:22,127 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] [2023-04-03 03:41:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-04-03 03:41:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1415. [2023-04-03 03:41:22,178 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) [2023-04-03 03:41:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1763 transitions. [2023-04-03 03:41:22,183 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1763 transitions. Word has length 84 [2023-04-03 03:41:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:22,184 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 1763 transitions. [2023-04-03 03:41:22,184 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) [2023-04-03 03:41:22,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1763 transitions. [2023-04-03 03:41:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 03:41:22,185 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:22,186 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] [2023-04-03 03:41:22,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:41:22,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:22,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1826998485, now seen corresponding path program 1 times [2023-04-03 03:41:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:22,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135321946] [2023-04-03 03:41:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:41:23,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:23,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135321946] [2023-04-03 03:41:23,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135321946] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:23,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:23,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:41:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938233690] [2023-04-03 03:41:23,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:23,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:41:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:41:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:41:23,127 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) [2023-04-03 03:41:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:25,171 INFO L93 Difference]: Finished difference Result 4379 states and 5534 transitions. [2023-04-03 03:41:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:41:25,172 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 [2023-04-03 03:41:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:25,186 INFO L225 Difference]: With dead ends: 4379 [2023-04-03 03:41:25,186 INFO L226 Difference]: Without dead ends: 3430 [2023-04-03 03:41:25,190 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 [2023-04-03 03:41:25,196 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, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:41:25,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 570 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:41:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2023-04-03 03:41:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3365. [2023-04-03 03:41:25,358 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) [2023-04-03 03:41:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4247 transitions. [2023-04-03 03:41:25,370 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4247 transitions. Word has length 84 [2023-04-03 03:41:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:25,372 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 4247 transitions. [2023-04-03 03:41:25,372 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) [2023-04-03 03:41:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4247 transitions. [2023-04-03 03:41:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 03:41:25,376 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:25,376 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] [2023-04-03 03:41:25,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:41:25,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:25,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 44929174, now seen corresponding path program 1 times [2023-04-03 03:41:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899675340] [2023-04-03 03:41:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 03:41:25,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899675340] [2023-04-03 03:41:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899675340] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:25,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:41:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528375468] [2023-04-03 03:41:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:25,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:41:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:41:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:41:25,776 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) [2023-04-03 03:41:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:26,383 INFO L93 Difference]: Finished difference Result 6700 states and 8461 transitions. [2023-04-03 03:41:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 03:41:26,383 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 [2023-04-03 03:41:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:26,397 INFO L225 Difference]: With dead ends: 6700 [2023-04-03 03:41:26,397 INFO L226 Difference]: Without dead ends: 3361 [2023-04-03 03:41:26,406 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 [2023-04-03 03:41:26,409 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, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:41:26,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1669 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:41:26,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2023-04-03 03:41:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 3361. [2023-04-03 03:41:26,564 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) [2023-04-03 03:41:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 4241 transitions. [2023-04-03 03:41:26,578 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 4241 transitions. Word has length 88 [2023-04-03 03:41:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:26,579 INFO L495 AbstractCegarLoop]: Abstraction has 3361 states and 4241 transitions. [2023-04-03 03:41:26,579 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) [2023-04-03 03:41:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 4241 transitions. [2023-04-03 03:41:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:41:26,581 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:26,581 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] [2023-04-03 03:41:26,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:41:26,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:26,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash 270987740, now seen corresponding path program 1 times [2023-04-03 03:41:26,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:26,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297930936] [2023-04-03 03:41:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:26,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 03:41:27,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:27,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297930936] [2023-04-03 03:41:27,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297930936] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:27,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:27,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:41:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748163361] [2023-04-03 03:41:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:27,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:41:27,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:41:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:41:27,456 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) [2023-04-03 03:41:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:28,630 INFO L93 Difference]: Finished difference Result 5415 states and 6936 transitions. [2023-04-03 03:41:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 03:41:28,630 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 [2023-04-03 03:41:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:28,655 INFO L225 Difference]: With dead ends: 5415 [2023-04-03 03:41:28,655 INFO L226 Difference]: Without dead ends: 5401 [2023-04-03 03:41:28,658 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 [2023-04-03 03:41:28,659 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 [2023-04-03 03:41:28,660 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] [2023-04-03 03:41:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2023-04-03 03:41:28,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 5286. [2023-04-03 03:41:28,960 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) [2023-04-03 03:41:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 6713 transitions. [2023-04-03 03:41:28,979 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 6713 transitions. Word has length 100 [2023-04-03 03:41:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:28,980 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 6713 transitions. [2023-04-03 03:41:28,980 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) [2023-04-03 03:41:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 6713 transitions. [2023-04-03 03:41:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:41:28,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:28,986 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] [2023-04-03 03:41:28,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:41:28,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:28,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:28,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1175264697, now seen corresponding path program 1 times [2023-04-03 03:41:28,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:28,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546082] [2023-04-03 03:41:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:28,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 03:41:30,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:30,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546082] [2023-04-03 03:41:30,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546082] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:30,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:30,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 03:41:30,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817293538] [2023-04-03 03:41:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:30,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 03:41:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 03:41:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-03 03:41:30,049 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) [2023-04-03 03:41:32,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:32,504 INFO L93 Difference]: Finished difference Result 7731 states and 9885 transitions. [2023-04-03 03:41:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 03:41:32,505 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 [2023-04-03 03:41:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:32,535 INFO L225 Difference]: With dead ends: 7731 [2023-04-03 03:41:32,535 INFO L226 Difference]: Without dead ends: 7728 [2023-04-03 03:41:32,539 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 [2023-04-03 03:41:32,540 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 [2023-04-03 03:41:32,540 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] [2023-04-03 03:41:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7728 states. [2023-04-03 03:41:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7728 to 7688. [2023-04-03 03:41:33,000 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) [2023-04-03 03:41:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 9832 transitions. [2023-04-03 03:41:33,027 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 9832 transitions. Word has length 103 [2023-04-03 03:41:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:33,027 INFO L495 AbstractCegarLoop]: Abstraction has 7688 states and 9832 transitions. [2023-04-03 03:41:33,028 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) [2023-04-03 03:41:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 9832 transitions. [2023-04-03 03:41:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-03 03:41:33,032 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:33,032 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] [2023-04-03 03:41:33,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:41:33,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:33,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:33,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1880756433, now seen corresponding path program 1 times [2023-04-03 03:41:33,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:33,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358276147] [2023-04-03 03:41:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:33,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 03:41:33,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358276147] [2023-04-03 03:41:33,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358276147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:33,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:33,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:41:33,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399427035] [2023-04-03 03:41:33,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:41:33,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:41:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:41:33,317 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) [2023-04-03 03:41:33,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:33,848 INFO L93 Difference]: Finished difference Result 10326 states and 13252 transitions. [2023-04-03 03:41:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:41:33,849 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 [2023-04-03 03:41:33,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:33,879 INFO L225 Difference]: With dead ends: 10326 [2023-04-03 03:41:33,880 INFO L226 Difference]: Without dead ends: 5633 [2023-04-03 03:41:33,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:41:33,894 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 [2023-04-03 03:41:33,894 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] [2023-04-03 03:41:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5633 states. [2023-04-03 03:41:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5633 to 5633. [2023-04-03 03:41:34,281 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) [2023-04-03 03:41:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 7109 transitions. [2023-04-03 03:41:34,302 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 7109 transitions. Word has length 120 [2023-04-03 03:41:34,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:34,302 INFO L495 AbstractCegarLoop]: Abstraction has 5633 states and 7109 transitions. [2023-04-03 03:41:34,303 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) [2023-04-03 03:41:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 7109 transitions. [2023-04-03 03:41:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-03 03:41:34,306 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:34,306 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] [2023-04-03 03:41:34,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:41:34,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:34,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:34,307 INFO L85 PathProgramCache]: Analyzing trace with hash -880474644, now seen corresponding path program 1 times [2023-04-03 03:41:34,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:34,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472017811] [2023-04-03 03:41:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:34,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 03:41:35,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:35,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472017811] [2023-04-03 03:41:35,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472017811] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:41:35,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:41:35,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:41:35,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617679321] [2023-04-03 03:41:35,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:41:35,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:41:35,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:41:35,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:41:35,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:41:35,096 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) [2023-04-03 03:41:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:41:36,642 INFO L93 Difference]: Finished difference Result 7975 states and 10350 transitions. [2023-04-03 03:41:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 03:41:36,643 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 [2023-04-03 03:41:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:41:36,668 INFO L225 Difference]: With dead ends: 7975 [2023-04-03 03:41:36,669 INFO L226 Difference]: Without dead ends: 7961 [2023-04-03 03:41:36,673 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 [2023-04-03 03:41:36,674 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1016 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2023-04-03 03:41:36,675 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] [2023-04-03 03:41:36,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7961 states. [2023-04-03 03:41:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7961 to 7511. [2023-04-03 03:41:37,062 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) [2023-04-03 03:41:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7511 states to 7511 states and 9514 transitions. [2023-04-03 03:41:37,085 INFO L78 Accepts]: Start accepts. Automaton has 7511 states and 9514 transitions. Word has length 122 [2023-04-03 03:41:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:41:37,086 INFO L495 AbstractCegarLoop]: Abstraction has 7511 states and 9514 transitions. [2023-04-03 03:41:37,086 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) [2023-04-03 03:41:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 7511 states and 9514 transitions. [2023-04-03 03:41:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-03 03:41:37,094 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:41:37,094 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] [2023-04-03 03:41:37,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:41:37,094 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 03:41:37,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:41:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash 727468607, now seen corresponding path program 1 times [2023-04-03 03:41:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:41:37,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194936021] [2023-04-03 03:41:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:41:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-03 03:41:38,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:41:38,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194936021] [2023-04-03 03:41:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194936021] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 03:41:38,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952736919] [2023-04-03 03:41:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:41:38,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 03:41:38,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:41:38,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 03:41:38,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 03:41:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:41:39,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 73 conjunts are in the unsatisfiable core [2023-04-03 03:41:39,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 03:41:39,709 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 [2023-04-03 03:41:40,110 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 [2023-04-03 03:41:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-03 03:41:40,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 03:41:41,136 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 [2023-04-03 03:41:41,588 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 [2023-04-03 03:41:43,865 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-04-03 03:41:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-04-03 03:41:44,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952736919] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 03:41:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [762998238] [2023-04-03 03:41:44,201 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2023-04-03 03:41:44,202 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 03:41:44,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 03:41:44,208 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 03:41:44,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 03:41:53,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 217 for LOIs [2023-04-03 03:41:57,178 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 148 for LOIs [2023-04-03 03:41:58,248 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2023-04-03 03:41:58,828 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2023-04-03 03:42:13,125 WARN L223 SmtUtils]: Spent 13.41s on a formula simplification. DAG size of input: 5624 DAG size of output: 171 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:42:26,872 WARN L223 SmtUtils]: Spent 13.48s on a formula simplification. DAG size of input: 5542 DAG size of output: 175 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:42:39,030 WARN L223 SmtUtils]: Spent 11.56s on a formula simplification. DAG size of input: 4975 DAG size of output: 144 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:42:39,394 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_initialize with input of size 121 for LOIs [2023-04-03 03:42:39,410 INFO L197 IcfgInterpreter]: Interpreting procedure ir_set_termios with input of size 143 for LOIs [2023-04-03 03:42:48,009 WARN L223 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 3905 DAG size of output: 154 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:42:54,720 WARN L223 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 3905 DAG size of output: 154 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:02,069 WARN L223 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 3903 DAG size of output: 146 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:08,938 WARN L223 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 3903 DAG size of output: 146 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:16,628 WARN L223 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 4058 DAG size of output: 148 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:24,115 WARN L223 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 4058 DAG size of output: 148 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:25,047 INFO L197 IcfgInterpreter]: Interpreting procedure dev_err with input of size 131 for LOIs [2023-04-03 03:43:25,132 INFO L197 IcfgInterpreter]: Interpreting procedure tty_encode_baud_rate with input of size 125 for LOIs [2023-04-03 03:43:25,152 INFO L197 IcfgInterpreter]: Interpreting procedure usb_free_urb with input of size 127 for LOIs [2023-04-03 03:43:25,290 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 133 for LOIs [2023-04-03 03:43:25,310 INFO L197 IcfgInterpreter]: Interpreting procedure tty_termios_copy_hw with input of size 138 for LOIs [2023-04-03 03:43:25,332 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 133 for LOIs [2023-04-03 03:43:25,576 INFO L197 IcfgInterpreter]: Interpreting procedure __kmalloc with input of size 133 for LOIs [2023-04-03 03:43:34,849 WARN L223 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 4402 DAG size of output: 136 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:43,941 WARN L223 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 4402 DAG size of output: 136 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:43,995 INFO L197 IcfgInterpreter]: Interpreting procedure usb_alloc_urb with input of size 136 for LOIs [2023-04-03 03:43:44,273 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undefined_pointer with input of size 128 for LOIs [2023-04-03 03:43:50,837 WARN L223 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 3737 DAG size of output: 127 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:57,270 WARN L223 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 3737 DAG size of output: 127 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:43:57,325 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 127 for LOIs [2023-04-03 03:43:57,403 INFO L197 IcfgInterpreter]: Interpreting procedure tty_get_baud_rate with input of size 127 for LOIs [2023-04-03 03:43:57,422 INFO L197 IcfgInterpreter]: Interpreting procedure ir_init with input of size 130 for LOIs [2023-04-03 03:44:04,790 WARN L223 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 4039 DAG size of output: 134 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:44:11,971 WARN L223 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 4039 DAG size of output: 134 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-03 03:44:12,420 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 128 for LOIs [2023-04-03 03:44:12,446 INFO L197 IcfgInterpreter]: Interpreting procedure usb_serial_register with input of size 177 for LOIs [2023-04-03 03:44:12,485 INFO L197 IcfgInterpreter]: Interpreting procedure usb_register with input of size 127 for LOIs [2023-04-03 03:44:12,730 INFO L197 IcfgInterpreter]: Interpreting procedure usb_register_driver with input of size 138 for LOIs [2023-04-03 03:44:12,764 INFO L197 IcfgInterpreter]: Interpreting procedure ir_xbof_change with input of size 210 for LOIs [2023-04-03 03:44:14,311 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 03:45:13,736 WARN L223 SmtUtils]: Spent 57.83s on a formula simplification that was a NOOP. DAG size: 1738 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)