/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 01:22:15,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 01:22:15,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 01:22:15,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 01:22:15,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 01:22:15,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 01:22:15,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 01:22:15,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 01:22:15,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 01:22:15,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 01:22:15,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 01:22:15,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 01:22:15,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 01:22:15,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 01:22:15,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 01:22:15,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 01:22:15,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 01:22:15,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 01:22:15,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 01:22:15,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 01:22:15,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 01:22:15,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 01:22:15,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 01:22:15,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 01:22:15,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 01:22:15,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 01:22:15,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 01:22:15,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 01:22:15,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 01:22:15,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 01:22:15,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 01:22:15,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 01:22:15,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 01:22:15,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 01:22:15,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 01:22:15,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 01:22:15,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 01:22:15,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 01:22:15,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 01:22:15,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 01:22:15,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 01:22:15,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 01:22:15,746 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 01:22:15,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 01:22:15,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 01:22:15,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 01:22:15,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 01:22:15,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 01:22:15,748 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 01:22:15,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 01:22:15,748 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 01:22:15,748 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 01:22:15,748 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 01:22:15,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 01:22:15,748 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 01:22:15,748 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 01:22:15,748 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 01:22:15,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 01:22:15,749 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 01:22:15,749 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 01:22:15,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 01:22:15,749 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 01:22:15,750 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 01:22:15,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 01:22:15,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 01:22:15,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 01:22:15,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 01:22:15,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 01:22:15,751 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 01:22:15,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 01:22:15,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 01:22:15,752 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 01:22:15,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 01:22:15,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 01:22:15,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 01:22:15,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 01:22:15,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 01:22:15,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 01:22:15,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 01:22:15,926 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 01:22:15,927 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 01:22:15,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2023-04-01 01:22:17,047 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 01:22:17,439 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 01:22:17,439 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2023-04-01 01:22:17,469 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66357684f/3ac2d1cd874c4b6d9acf5ed3b35977dd/FLAGfc78236f1 [2023-04-01 01:22:17,481 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66357684f/3ac2d1cd874c4b6d9acf5ed3b35977dd [2023-04-01 01:22:17,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 01:22:17,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 01:22:17,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 01:22:17,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 01:22:17,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 01:22:17,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:22:17" (1/1) ... [2023-04-01 01:22:17,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6824de54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:17, skipping insertion in model container [2023-04-01 01:22:17,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:22:17" (1/1) ... [2023-04-01 01:22:17,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 01:22:17,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 01:22:18,036 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2023-04-01 01:22:18,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 01:22:18,840 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 01:22:18,895 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2023-04-01 01:22:19,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 01:22:19,074 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 01:22:19,075 WARN L667 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 01:22:19,075 WARN L667 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 01:22:19,079 INFO L208 MainTranslator]: Completed translation [2023-04-01 01:22:19,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19 WrapperNode [2023-04-01 01:22:19,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 01:22:19,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 01:22:19,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 01:22:19,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 01:22:19,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 01:22:19,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 01:22:19,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 01:22:19,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 01:22:19,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (1/1) ... [2023-04-01 01:22:19,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 01:22:19,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 01:22:19,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 01:22:19,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-04-01 01:22:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-04-01 01:22:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2023-04-01 01:22:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_alloc_bufs [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_realloc_bufs [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_lock [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_encaps [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_write_wakeup [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_xmit [2023-04-01 01:22:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_close [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_open [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_init [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_uninit [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_netdev [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_setup [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_receive_buf [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_sync [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_alloc [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_open [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_esc [2023-04-01 01:22:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_unesc [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_esc6 [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_unesc6 [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_init [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_exit [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_outfill [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_keepalive [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_3 [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_4 [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_timer_1 [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-04-01 01:22:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_timer_2 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_2 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync_1 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_2 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_sl_alloc_bufs_3 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdevice_4 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync_5 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync_6 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_7 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_8 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_9 [2023-04-01 01:22:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_10 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_11 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_12 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_13 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_14 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_15 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_16 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_17 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_slip_open_18 [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_callback_ret_val [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2023-04-01 01:22:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2023-04-01 01:22:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2023-04-01 01:22:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2023-04-01 01:22:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-04-01 01:22:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2023-04-01 01:22:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-04-01 01:22:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-04-01 01:22:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-04-01 01:22:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdevice [2023-04-01 01:22:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_compress [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_init [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_remember [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_uncompress [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-04-01 01:22:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_queue [2023-04-01 01:22:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-04-01 01:22:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 01:22:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 01:22:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2023-04-01 01:22:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 01:22:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_callback_ret_val [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2023-04-01 01:22:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_2 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_8 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_10 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_12 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_14 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_16 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_7 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_9 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_11 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_13 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_15 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_17 [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-04-01 01:22:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync_1 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync_5 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync_6 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_3 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_4 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure choose_timer_1 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure choose_timer_2 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_2 [2023-04-01 01:22:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2023-04-01 01:22:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2023-04-01 01:22:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-04-01 01:22:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-04-01 01:22:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2023-04-01 01:22:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdevice [2023-04-01 01:22:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdevice_4 [2023-04-01 01:22:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_queue [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-04-01 01:22:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_init [2023-04-01 01:22:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_compress [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_uncompress [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_remember [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure slip_esc [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure slip_unesc [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure slip_esc6 [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure slip_unesc6 [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_keepalive [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_outfill [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_alloc_bufs [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_sl_alloc_bufs_3 [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_realloc_bufs [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_lock [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2023-04-01 01:22:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_encaps [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure slip_write_wakeup [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_xmit [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_close [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_open [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_init [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_uninit [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_netdev [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_setup [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure slip_receive_buf [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_sync [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure sl_alloc [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure slip_open [2023-04-01 01:22:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_slip_open_18 [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure slip_init [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure slip_exit [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-01 01:22:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-01 01:22:19,914 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 01:22:19,918 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 01:22:20,171 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 01:22:21,984 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 01:22:22,854 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 01:22:22,854 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 01:22:22,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:22:22 BoogieIcfgContainer [2023-04-01 01:22:22,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 01:22:22,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 01:22:22,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 01:22:22,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 01:22:22,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:22:17" (1/3) ... [2023-04-01 01:22:22,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d7fc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:22:22, skipping insertion in model container [2023-04-01 01:22:22,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:22:19" (2/3) ... [2023-04-01 01:22:22,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d7fc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:22:22, skipping insertion in model container [2023-04-01 01:22:22,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:22:22" (3/3) ... [2023-04-01 01:22:22,864 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2023-04-01 01:22:22,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 01:22:22,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 01:22:22,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 01:22:22,929 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;@3c12b0b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 01:22:22,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 01:22:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 1177 states, 693 states have (on average 1.303030303030303) internal successors, (903), 731 states have internal predecessors, (903), 337 states have call successors, (337), 143 states have call predecessors, (337), 142 states have return successors, (332), 327 states have call predecessors, (332), 332 states have call successors, (332) [2023-04-01 01:22:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 01:22:22,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:22:22,959 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:22:22,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:22:22,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:22:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1924568355, now seen corresponding path program 1 times [2023-04-01 01:22:22,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:22:22,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642669128] [2023-04-01 01:22:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:22:22,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:22:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:22:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 01:22:23,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:22:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642669128] [2023-04-01 01:22:23,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642669128] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:22:23,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:22:23,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:22:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110651711] [2023-04-01 01:22:23,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:22:23,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:22:23,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:22:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:22:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:22:23,326 INFO L87 Difference]: Start difference. First operand has 1177 states, 693 states have (on average 1.303030303030303) internal successors, (903), 731 states have internal predecessors, (903), 337 states have call successors, (337), 143 states have call predecessors, (337), 142 states have return successors, (332), 327 states have call predecessors, (332), 332 states have call successors, (332) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 01:22:25,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:27,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:29,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:22:29,410 INFO L93 Difference]: Finished difference Result 2964 states and 3956 transitions. [2023-04-01 01:22:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:22:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 80 [2023-04-01 01:22:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:22:29,439 INFO L225 Difference]: With dead ends: 2964 [2023-04-01 01:22:29,439 INFO L226 Difference]: Without dead ends: 1710 [2023-04-01 01:22:29,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:22:29,451 INFO L413 NwaCegarLoop]: 1434 mSDtfsCounter, 878 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 01:22:29,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2782 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 340 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 01:22:29,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2023-04-01 01:22:29,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1710. [2023-04-01 01:22:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1008 states have (on average 1.2827380952380953) internal successors, (1293), 1050 states have internal predecessors, (1293), 485 states have call successors, (485), 218 states have call predecessors, (485), 216 states have return successors, (483), 475 states have call predecessors, (483), 483 states have call successors, (483) [2023-04-01 01:22:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2261 transitions. [2023-04-01 01:22:29,585 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2261 transitions. Word has length 80 [2023-04-01 01:22:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:22:29,585 INFO L495 AbstractCegarLoop]: Abstraction has 1710 states and 2261 transitions. [2023-04-01 01:22:29,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 01:22:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2261 transitions. [2023-04-01 01:22:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-01 01:22:29,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:22:29,599 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:22:29,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 01:22:29,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:22:29,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:22:29,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1354385789, now seen corresponding path program 1 times [2023-04-01 01:22:29,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:22:29,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400754773] [2023-04-01 01:22:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:22:29,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:22:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:22:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-04-01 01:22:30,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:22:30,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400754773] [2023-04-01 01:22:30,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400754773] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:22:30,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:22:30,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 01:22:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291165074] [2023-04-01 01:22:30,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:22:30,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 01:22:30,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:22:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 01:22:30,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 01:22:30,009 INFO L87 Difference]: Start difference. First operand 1710 states and 2261 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 01:22:32,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:34,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:36,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:36,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:22:36,733 INFO L93 Difference]: Finished difference Result 3395 states and 4489 transitions. [2023-04-01 01:22:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 01:22:36,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 149 [2023-04-01 01:22:36,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:22:36,746 INFO L225 Difference]: With dead ends: 3395 [2023-04-01 01:22:36,746 INFO L226 Difference]: Without dead ends: 1706 [2023-04-01 01:22:36,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 01:22:36,751 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 0 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5330 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 01:22:36,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5330 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 600 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 01:22:36,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2023-04-01 01:22:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1706. [2023-04-01 01:22:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1006 states have (on average 1.2813121272365806) internal successors, (1289), 1048 states have internal predecessors, (1289), 483 states have call successors, (483), 218 states have call predecessors, (483), 216 states have return successors, (481), 473 states have call predecessors, (481), 481 states have call successors, (481) [2023-04-01 01:22:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2253 transitions. [2023-04-01 01:22:36,805 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2253 transitions. Word has length 149 [2023-04-01 01:22:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:22:36,807 INFO L495 AbstractCegarLoop]: Abstraction has 1706 states and 2253 transitions. [2023-04-01 01:22:36,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 01:22:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2253 transitions. [2023-04-01 01:22:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-01 01:22:36,816 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:22:36,817 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:22:36,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 01:22:36,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:22:36,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:22:36,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1674277934, now seen corresponding path program 1 times [2023-04-01 01:22:36,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:22:36,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026872461] [2023-04-01 01:22:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:22:36,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:22:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:22:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-04-01 01:22:37,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:22:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026872461] [2023-04-01 01:22:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026872461] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:22:37,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:22:37,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 01:22:37,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409199309] [2023-04-01 01:22:37,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:22:37,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 01:22:37,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:22:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 01:22:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 01:22:37,108 INFO L87 Difference]: Start difference. First operand 1706 states and 2253 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2023-04-01 01:22:39,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:42,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:44,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:22:45,324 INFO L93 Difference]: Finished difference Result 1719 states and 2266 transitions. [2023-04-01 01:22:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 01:22:45,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 151 [2023-04-01 01:22:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:22:45,333 INFO L225 Difference]: With dead ends: 1719 [2023-04-01 01:22:45,333 INFO L226 Difference]: Without dead ends: 1716 [2023-04-01 01:22:45,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:22:45,335 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 6 mSDsluCounter, 6615 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7940 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-04-01 01:22:45,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7940 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 918 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2023-04-01 01:22:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-04-01 01:22:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1714. [2023-04-01 01:22:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1011 states have (on average 1.2799208704253215) internal successors, (1294), 1054 states have internal predecessors, (1294), 484 states have call successors, (484), 219 states have call predecessors, (484), 218 states have return successors, (483), 474 states have call predecessors, (483), 482 states have call successors, (483) [2023-04-01 01:22:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2261 transitions. [2023-04-01 01:22:45,440 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2261 transitions. Word has length 151 [2023-04-01 01:22:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:22:45,440 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2261 transitions. [2023-04-01 01:22:45,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2023-04-01 01:22:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2261 transitions. [2023-04-01 01:22:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-01 01:22:45,445 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:22:45,445 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:22:45,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 01:22:45,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:22:45,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:22:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash -459718694, now seen corresponding path program 1 times [2023-04-01 01:22:45,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:22:45,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342318532] [2023-04-01 01:22:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:22:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:22:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:22:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-04-01 01:22:45,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:22:45,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342318532] [2023-04-01 01:22:45,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342318532] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:22:45,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:22:45,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 01:22:45,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387842888] [2023-04-01 01:22:45,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:22:45,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 01:22:45,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:22:45,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 01:22:45,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 01:22:45,708 INFO L87 Difference]: Start difference. First operand 1714 states and 2261 transitions. Second operand has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 01:22:46,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:49,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:22:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:22:50,689 INFO L93 Difference]: Finished difference Result 1747 states and 2300 transitions. [2023-04-01 01:22:50,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 01:22:50,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 166 [2023-04-01 01:22:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:22:50,697 INFO L225 Difference]: With dead ends: 1747 [2023-04-01 01:22:50,697 INFO L226 Difference]: Without dead ends: 1744 [2023-04-01 01:22:50,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-01 01:22:50,698 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 25 mSDsluCounter, 7961 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 9296 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 01:22:50,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 9296 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 01:22:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2023-04-01 01:22:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1716. [2023-04-01 01:22:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1012 states have (on average 1.2796442687747036) internal successors, (1295), 1054 states have internal predecessors, (1295), 485 states have call successors, (485), 219 states have call predecessors, (485), 218 states have return successors, (484), 475 states have call predecessors, (484), 483 states have call successors, (484) [2023-04-01 01:22:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2264 transitions. [2023-04-01 01:22:50,765 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2264 transitions. Word has length 166 [2023-04-01 01:22:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:22:50,766 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2264 transitions. [2023-04-01 01:22:50,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 01:22:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2264 transitions. [2023-04-01 01:22:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-01 01:22:50,772 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:22:50,772 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:22:50,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 01:22:50,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:22:50,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:22:50,773 INFO L85 PathProgramCache]: Analyzing trace with hash 60664191, now seen corresponding path program 1 times [2023-04-01 01:22:50,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:22:50,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766884157] [2023-04-01 01:22:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:22:50,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:22:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:22:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-04-01 01:22:50,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:22:50,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766884157] [2023-04-01 01:22:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766884157] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:22:50,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:22:50,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 01:22:50,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918605619] [2023-04-01 01:22:50,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:22:50,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 01:22:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:22:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 01:22:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 01:22:50,952 INFO L87 Difference]: Start difference. First operand 1716 states and 2264 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2023-04-01 01:22:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:22:54,673 INFO L93 Difference]: Finished difference Result 3971 states and 5238 transitions. [2023-04-01 01:22:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 01:22:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) Word has length 194 [2023-04-01 01:22:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:22:54,683 INFO L225 Difference]: With dead ends: 3971 [2023-04-01 01:22:54,683 INFO L226 Difference]: Without dead ends: 2288 [2023-04-01 01:22:54,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 01:22:54,688 INFO L413 NwaCegarLoop]: 2009 mSDtfsCounter, 2202 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 01:22:54,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2202 Valid, 3059 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 01:22:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2023-04-01 01:22:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2287. [2023-04-01 01:22:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1345 states have (on average 1.2758364312267658) internal successors, (1716), 1400 states have internal predecessors, (1716), 647 states have call successors, (647), 296 states have call predecessors, (647), 294 states have return successors, (646), 632 states have call predecessors, (646), 645 states have call successors, (646) [2023-04-01 01:22:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3009 transitions. [2023-04-01 01:22:54,866 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3009 transitions. Word has length 194 [2023-04-01 01:22:54,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:22:54,866 INFO L495 AbstractCegarLoop]: Abstraction has 2287 states and 3009 transitions. [2023-04-01 01:22:54,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2023-04-01 01:22:54,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3009 transitions. [2023-04-01 01:22:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-04-01 01:22:54,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:22:54,878 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:22:54,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 01:22:54,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:22:54,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:22:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash -21264518, now seen corresponding path program 1 times [2023-04-01 01:22:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:22:54,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544709323] [2023-04-01 01:22:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:22:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:22:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:22:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-04-01 01:22:55,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:22:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544709323] [2023-04-01 01:22:55,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544709323] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:22:55,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:22:55,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 01:22:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313145344] [2023-04-01 01:22:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:22:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 01:22:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:22:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 01:22:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-01 01:22:55,783 INFO L87 Difference]: Start difference. First operand 2287 states and 3009 transitions. Second operand has 11 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (32), 6 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-01 01:22:59,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:23:00,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:23:03,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:23:04,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:04,756 INFO L93 Difference]: Finished difference Result 4000 states and 5279 transitions. [2023-04-01 01:23:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 01:23:04,757 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (32), 6 states have call predecessors, (32), 2 states have call successors, (32) Word has length 196 [2023-04-01 01:23:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:04,766 INFO L225 Difference]: With dead ends: 4000 [2023-04-01 01:23:04,766 INFO L226 Difference]: Without dead ends: 2306 [2023-04-01 01:23:04,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-04-01 01:23:04,771 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 787 mSDsluCounter, 12159 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 13519 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:04,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 13519 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-04-01 01:23:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-04-01 01:23:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2305. [2023-04-01 01:23:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1354 states have (on average 1.2740029542097489) internal successors, (1725), 1412 states have internal predecessors, (1725), 647 states have call successors, (647), 296 states have call predecessors, (647), 303 states have return successors, (667), 638 states have call predecessors, (667), 645 states have call successors, (667) [2023-04-01 01:23:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3039 transitions. [2023-04-01 01:23:04,893 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3039 transitions. Word has length 196 [2023-04-01 01:23:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:04,893 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3039 transitions. [2023-04-01 01:23:04,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (32), 6 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-01 01:23:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3039 transitions. [2023-04-01 01:23:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-04-01 01:23:04,901 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:04,901 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:04,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 01:23:04,901 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:04,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash 905314096, now seen corresponding path program 1 times [2023-04-01 01:23:04,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:04,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10594190] [2023-04-01 01:23:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:04,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-04-01 01:23:05,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:05,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10594190] [2023-04-01 01:23:05,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10594190] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:05,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:05,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 01:23:05,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446876573] [2023-04-01 01:23:05,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:05,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 01:23:05,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:05,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 01:23:05,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 01:23:05,292 INFO L87 Difference]: Start difference. First operand 2305 states and 3039 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2023-04-01 01:23:07,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:23:09,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:23:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:10,029 INFO L93 Difference]: Finished difference Result 4008 states and 5295 transitions. [2023-04-01 01:23:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 01:23:10,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 200 [2023-04-01 01:23:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:10,039 INFO L225 Difference]: With dead ends: 4008 [2023-04-01 01:23:10,039 INFO L226 Difference]: Without dead ends: 2313 [2023-04-01 01:23:10,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 01:23:10,044 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 3 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5299 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:10,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5299 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 619 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 01:23:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2023-04-01 01:23:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2309. [2023-04-01 01:23:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 1357 states have (on average 1.273397199705232) internal successors, (1728), 1415 states have internal predecessors, (1728), 647 states have call successors, (647), 296 states have call predecessors, (647), 304 states have return successors, (668), 639 states have call predecessors, (668), 645 states have call successors, (668) [2023-04-01 01:23:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3043 transitions. [2023-04-01 01:23:10,193 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3043 transitions. Word has length 200 [2023-04-01 01:23:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:10,209 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3043 transitions. [2023-04-01 01:23:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2023-04-01 01:23:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3043 transitions. [2023-04-01 01:23:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-04-01 01:23:10,226 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:10,226 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:10,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 01:23:10,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:10,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1418455168, now seen corresponding path program 1 times [2023-04-01 01:23:10,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:10,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274483589] [2023-04-01 01:23:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:10,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-04-01 01:23:10,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274483589] [2023-04-01 01:23:10,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274483589] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:10,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:10,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:23:10,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991601515] [2023-04-01 01:23:10,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:10,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:23:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:23:10,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:10,372 INFO L87 Difference]: Start difference. First operand 2309 states and 3043 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-04-01 01:23:12,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:12,437 INFO L93 Difference]: Finished difference Result 4011 states and 5300 transitions. [2023-04-01 01:23:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:23:12,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 222 [2023-04-01 01:23:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:12,447 INFO L225 Difference]: With dead ends: 4011 [2023-04-01 01:23:12,447 INFO L226 Difference]: Without dead ends: 2312 [2023-04-01 01:23:12,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:12,453 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 2 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:12,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2644 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 01:23:12,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2023-04-01 01:23:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2310. [2023-04-01 01:23:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2310 states, 1358 states have (on average 1.2731958762886597) internal successors, (1729), 1416 states have internal predecessors, (1729), 647 states have call successors, (647), 296 states have call predecessors, (647), 304 states have return successors, (668), 639 states have call predecessors, (668), 645 states have call successors, (668) [2023-04-01 01:23:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 3044 transitions. [2023-04-01 01:23:12,549 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 3044 transitions. Word has length 222 [2023-04-01 01:23:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:12,550 INFO L495 AbstractCegarLoop]: Abstraction has 2310 states and 3044 transitions. [2023-04-01 01:23:12,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-04-01 01:23:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 3044 transitions. [2023-04-01 01:23:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-04-01 01:23:12,560 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:12,560 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:12,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 01:23:12,561 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:12,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1323832207, now seen corresponding path program 1 times [2023-04-01 01:23:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:12,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376958148] [2023-04-01 01:23:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-04-01 01:23:12,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:12,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376958148] [2023-04-01 01:23:12,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376958148] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:12,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:12,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 01:23:12,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966496128] [2023-04-01 01:23:12,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:12,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 01:23:12,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 01:23:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:12,671 INFO L87 Difference]: Start difference. First operand 2310 states and 3044 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-04-01 01:23:14,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:23:16,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 01:23:17,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 01:23:17,199 INFO L93 Difference]: Finished difference Result 4001 states and 5287 transitions. [2023-04-01 01:23:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 01:23:17,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 223 [2023-04-01 01:23:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 01:23:17,212 INFO L225 Difference]: With dead ends: 4001 [2023-04-01 01:23:17,212 INFO L226 Difference]: Without dead ends: 2301 [2023-04-01 01:23:17,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 01:23:17,219 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 5 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 01:23:17,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2606 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 01:23:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-04-01 01:23:17,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2297. [2023-04-01 01:23:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 1351 states have (on average 1.2723908216136195) internal successors, (1719), 1409 states have internal predecessors, (1719), 643 states have call successors, (643), 294 states have call predecessors, (643), 302 states have return successors, (664), 635 states have call predecessors, (664), 641 states have call successors, (664) [2023-04-01 01:23:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 3026 transitions. [2023-04-01 01:23:17,332 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 3026 transitions. Word has length 223 [2023-04-01 01:23:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 01:23:17,333 INFO L495 AbstractCegarLoop]: Abstraction has 2297 states and 3026 transitions. [2023-04-01 01:23:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-04-01 01:23:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 3026 transitions. [2023-04-01 01:23:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-04-01 01:23:17,341 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 01:23:17,341 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 01:23:17,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 01:23:17,341 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 01:23:17,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 01:23:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1157560426, now seen corresponding path program 1 times [2023-04-01 01:23:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 01:23:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008260286] [2023-04-01 01:23:17,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 01:23:17,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 01:23:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 01:23:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-04-01 01:23:17,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 01:23:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008260286] [2023-04-01 01:23:17,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008260286] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 01:23:17,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 01:23:17,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 01:23:17,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150574360] [2023-04-01 01:23:17,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 01:23:17,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 01:23:17,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 01:23:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 01:23:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 01:23:17,611 INFO L87 Difference]: Start difference. First operand 2297 states and 3026 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40)