/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 13:27:15,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 13:27:15,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 13:27:15,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 13:27:15,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 13:27:15,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 13:27:15,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 13:27:15,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 13:27:15,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 13:27:15,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 13:27:15,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 13:27:15,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 13:27:15,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 13:27:15,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 13:27:15,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 13:27:15,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 13:27:15,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 13:27:15,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 13:27:15,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 13:27:15,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 13:27:15,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 13:27:15,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 13:27:15,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 13:27:15,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 13:27:15,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 13:27:15,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 13:27:15,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 13:27:15,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 13:27:15,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 13:27:15,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 13:27:15,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 13:27:15,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 13:27:15,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 13:27:15,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 13:27:15,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 13:27:15,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 13:27:15,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 13:27:15,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 13:27:15,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 13:27:15,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 13:27:15,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 13:27:15,268 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 13:27:15,289 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 13:27:15,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 13:27:15,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 13:27:15,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 13:27:15,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 13:27:15,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 13:27:15,291 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 13:27:15,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 13:27:15,291 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 13:27:15,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 13:27:15,292 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 13:27:15,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 13:27:15,292 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 13:27:15,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 13:27:15,292 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 13:27:15,292 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 13:27:15,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 13:27:15,292 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 13:27:15,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 13:27:15,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 13:27:15,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:27:15,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 13:27:15,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 13:27:15,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 13:27:15,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 13:27:15,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 13:27:15,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 13:27:15,493 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 13:27:15,493 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 13:27:15,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-04-01 13:27:16,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 13:27:16,773 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 13:27:16,773 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-04-01 13:27:16,800 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140df0478/57eb5540311d41e2b0ddc2fc3bec8f14/FLAGba68fbad7 [2023-04-01 13:27:16,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140df0478/57eb5540311d41e2b0ddc2fc3bec8f14 [2023-04-01 13:27:16,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 13:27:16,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 13:27:16,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 13:27:16,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 13:27:16,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 13:27:16,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:27:16" (1/1) ... [2023-04-01 13:27:16,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3ef0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:16, skipping insertion in model container [2023-04-01 13:27:16,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:27:16" (1/1) ... [2023-04-01 13:27:16,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 13:27:16,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 13:27:17,464 WARN L633 FunctionHandler]: implicit declaration of function ldv_assume [2023-04-01 13:27:17,614 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[161338,161351] [2023-04-01 13:27:18,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:27:18,115 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 13:27:18,202 WARN L633 FunctionHandler]: implicit declaration of function ldv_assume [2023-04-01 13:27:18,211 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[161338,161351] [2023-04-01 13:27:18,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:27:18,389 WARN L667 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 13:27:18,389 WARN L667 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 13:27:18,390 WARN L667 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 13:27:18,394 INFO L208 MainTranslator]: Completed translation [2023-04-01 13:27:18,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18 WrapperNode [2023-04-01 13:27:18,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 13:27:18,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 13:27:18,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 13:27:18,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 13:27:18,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 13:27:18,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 13:27:18,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 13:27:18,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 13:27:18,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (1/1) ... [2023-04-01 13:27:18,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:27:18,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:27:18,600 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 13:27:18,616 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 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-01 13:27:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_hwtstamps [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2023-04-01 13:27:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2023-04-01 13:27:18,631 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 13:27:18,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hdr [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2023-04-01 13:27:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2023-04-01 13:27:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_gpio_defaults [2023-04-01 13:27:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2023-04-01 13:27:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2023-04-01 13:27:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2023-04-01 13:27:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2023-04-01 13:27:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2rxts [2023-04-01 13:27:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2023-04-01 13:27:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_output [2023-04-01 13:27:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_dp83640_adjfreq [2023-04-01 13:27:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_dp83640_adjtime [2023-04-01 13:27:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_dp83640_gettime [2023-04-01 13:27:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_dp83640_settime [2023-04-01 13:27:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_dp83640_enable [2023-04-01 13:27:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_dp83640_verify [2023-04-01 13:27:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2023-04-01 13:27:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure is_status_frame [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure expired [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure recalibrate [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_evnt [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_rxts [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_txts [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_status_frame [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure is_sync [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure match [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_free_clocks [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_init [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_this_phy [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get_bus [2023-04-01 13:27:18,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2023-04-01 13:27:18,637 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_probe [2023-04-01 13:27:18,637 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_remove [2023-04-01 13:27:18,637 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2023-04-01 13:27:18,637 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_timestamp_work [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_init [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_exit [2023-04-01 13:27:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_phy_driver_1 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_12 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_15 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_ni_16 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_17 [2023-04-01 13:27:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_18 [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-04-01 13:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 13:27:18,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-04-01 13:27:18,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2023-04-01 13:27:18,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2023-04-01 13:27:18,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2023-04-01 13:27:18,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2023-04-01 13:27:18,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 13:27:18,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_add [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_del [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2023-04-01 13:27:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_read_status [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_read [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_driver_register [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_driver_unregister [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_clock_event [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_clock_index [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_clock_register [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_clock_unregister [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ptp_find_pin [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2023-04-01 13:27:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-04-01 13:27:18,649 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 13:27:18,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-01 13:27:18,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 13:27:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 13:27:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 13:27:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 13:27:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 13:27:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 13:27:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 13:27:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-01 13:27:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 13:27:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-04-01 13:27:18,651 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2023-04-01 13:27:18,651 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-04-01 13:27:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-04-01 13:27:18,653 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_18 [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure skb_hwtstamps [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_12 [2023-04-01 13:27:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2023-04-01 13:27:18,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_15 [2023-04-01 13:27:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_17 [2023-04-01 13:27:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-01 13:27:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_phy_driver_1 [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hdr [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_ni_16 [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_add [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_del [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_read [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_read_status [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure phy_driver_unregister [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure phy_driver_register [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_clock_register [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_clock_unregister [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_clock_event [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_clock_index [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_find_pin [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_gpio_defaults [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure rx_timestamp_work [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2023-04-01 13:27:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure phy2rxts [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_output [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_dp83640_adjfreq [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_dp83640_adjtime [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_dp83640_gettime [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_dp83640_settime [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_dp83640_enable [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ptp_dp83640_verify [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure is_status_frame [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure expired [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure recalibrate [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure decode_evnt [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure decode_rxts [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure decode_txts [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure decode_status_frame [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure is_sync [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure match [2023-04-01 13:27:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_free_clocks [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_init [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure choose_this_phy [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get_bus [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_probe [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_remove [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_init [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_exit [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2023-04-01 13:27:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 13:27:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 13:27:19,183 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 13:27:19,187 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 13:27:19,463 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 13:27:21,028 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 13:27:21,597 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 13:27:21,597 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 13:27:21,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:27:21 BoogieIcfgContainer [2023-04-01 13:27:21,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 13:27:21,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 13:27:21,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 13:27:21,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 13:27:21,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:27:16" (1/3) ... [2023-04-01 13:27:21,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca37beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:27:21, skipping insertion in model container [2023-04-01 13:27:21,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:18" (2/3) ... [2023-04-01 13:27:21,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca37beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:27:21, skipping insertion in model container [2023-04-01 13:27:21,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:27:21" (3/3) ... [2023-04-01 13:27:21,606 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-04-01 13:27:21,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 13:27:21,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 13:27:21,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 13:27:21,669 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;@765e38d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 13:27:21,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 13:27:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 1050 states, 581 states have (on average 1.2581755593803787) internal successors, (731), 603 states have internal predecessors, (731), 319 states have call successors, (319), 133 states have call predecessors, (319), 132 states have return successors, (316), 315 states have call predecessors, (316), 316 states have call successors, (316) [2023-04-01 13:27:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-04-01 13:27:21,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:21,688 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 13:27:21,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:21,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:21,692 INFO L85 PathProgramCache]: Analyzing trace with hash -771693151, now seen corresponding path program 1 times [2023-04-01 13:27:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:21,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779344991] [2023-04-01 13:27:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 13:27:22,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779344991] [2023-04-01 13:27:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779344991] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:22,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:22,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 13:27:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707760379] [2023-04-01 13:27:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:22,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 13:27:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 13:27:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 13:27:22,218 INFO L87 Difference]: Start difference. First operand has 1050 states, 581 states have (on average 1.2581755593803787) internal successors, (731), 603 states have internal predecessors, (731), 319 states have call successors, (319), 133 states have call predecessors, (319), 132 states have return successors, (316), 315 states have call predecessors, (316), 316 states have call successors, (316) Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 13:27:24,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:24,165 INFO L93 Difference]: Finished difference Result 2706 states and 3591 transitions. [2023-04-01 13:27:24,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 13:27:24,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2023-04-01 13:27:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:24,190 INFO L225 Difference]: With dead ends: 2706 [2023-04-01 13:27:24,190 INFO L226 Difference]: Without dead ends: 1742 [2023-04-01 13:27:24,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 13:27:24,202 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 1165 mSDsluCounter, 3666 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 4724 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:24,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 4724 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 13:27:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2023-04-01 13:27:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1742. [2023-04-01 13:27:24,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 992 states have (on average 1.2610887096774193) internal successors, (1251), 1028 states have internal predecessors, (1251), 511 states have call successors, (511), 239 states have call predecessors, (511), 238 states have return successors, (525), 506 states have call predecessors, (525), 508 states have call successors, (525) [2023-04-01 13:27:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2287 transitions. [2023-04-01 13:27:24,385 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2287 transitions. Word has length 50 [2023-04-01 13:27:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:24,386 INFO L495 AbstractCegarLoop]: Abstraction has 1742 states and 2287 transitions. [2023-04-01 13:27:24,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 13:27:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2287 transitions. [2023-04-01 13:27:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-01 13:27:24,397 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:24,397 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 13:27:24,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 13:27:24,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:24,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 493675757, now seen corresponding path program 1 times [2023-04-01 13:27:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404780334] [2023-04-01 13:27:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:24,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 13:27:24,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404780334] [2023-04-01 13:27:24,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404780334] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:24,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:24,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:27:24,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111987031] [2023-04-01 13:27:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:24,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:27:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:24,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:27:24,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:27:24,558 INFO L87 Difference]: Start difference. First operand 1742 states and 2287 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-01 13:27:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:25,080 INFO L93 Difference]: Finished difference Result 3586 states and 4695 transitions. [2023-04-01 13:27:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:27:25,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 109 [2023-04-01 13:27:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:25,089 INFO L225 Difference]: With dead ends: 3586 [2023-04-01 13:27:25,089 INFO L226 Difference]: Without dead ends: 1860 [2023-04-01 13:27:25,094 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 13:27:25,094 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 119 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:25,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2014 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 13:27:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-04-01 13:27:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1849. [2023-04-01 13:27:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1059 states have (on average 1.2615675165250235) internal successors, (1336), 1096 states have internal predecessors, (1336), 532 states have call successors, (532), 258 states have call predecessors, (532), 257 states have return successors, (546), 526 states have call predecessors, (546), 529 states have call successors, (546) [2023-04-01 13:27:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2414 transitions. [2023-04-01 13:27:25,146 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2414 transitions. Word has length 109 [2023-04-01 13:27:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:25,146 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 2414 transitions. [2023-04-01 13:27:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-01 13:27:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2414 transitions. [2023-04-01 13:27:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-01 13:27:25,151 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:25,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:25,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 13:27:25,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:25,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash 836089293, now seen corresponding path program 1 times [2023-04-01 13:27:25,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:25,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150686718] [2023-04-01 13:27:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:25,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 13:27:25,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:25,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150686718] [2023-04-01 13:27:25,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150686718] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:25,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:25,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:27:25,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118932681] [2023-04-01 13:27:25,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:25,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:27:25,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:25,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:27:25,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:27:25,257 INFO L87 Difference]: Start difference. First operand 1849 states and 2414 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-01 13:27:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:25,919 INFO L93 Difference]: Finished difference Result 4936 states and 6439 transitions. [2023-04-01 13:27:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:27:25,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 141 [2023-04-01 13:27:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:25,933 INFO L225 Difference]: With dead ends: 4936 [2023-04-01 13:27:25,933 INFO L226 Difference]: Without dead ends: 3123 [2023-04-01 13:27:25,940 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 13:27:25,943 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 1023 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:25,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1962 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 13:27:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2023-04-01 13:27:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3112. [2023-04-01 13:27:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 1806 states have (on average 1.2491694352159468) internal successors, (2256), 1862 states have internal predecessors, (2256), 868 states have call successors, (868), 436 states have call predecessors, (868), 437 states have return successors, (890), 859 states have call predecessors, (890), 865 states have call successors, (890) [2023-04-01 13:27:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4014 transitions. [2023-04-01 13:27:26,063 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4014 transitions. Word has length 141 [2023-04-01 13:27:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:26,063 INFO L495 AbstractCegarLoop]: Abstraction has 3112 states and 4014 transitions. [2023-04-01 13:27:26,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-01 13:27:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4014 transitions. [2023-04-01 13:27:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-01 13:27:26,070 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:26,070 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:26,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 13:27:26,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:26,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1357476803, now seen corresponding path program 1 times [2023-04-01 13:27:26,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:26,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340998696] [2023-04-01 13:27:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-04-01 13:27:26,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340998696] [2023-04-01 13:27:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340998696] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:26,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:26,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:27:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697262747] [2023-04-01 13:27:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:26,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:27:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:27:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:27:26,183 INFO L87 Difference]: Start difference. First operand 3112 states and 4014 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-04-01 13:27:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:26,713 INFO L93 Difference]: Finished difference Result 4723 states and 6101 transitions. [2023-04-01 13:27:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:27:26,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2023-04-01 13:27:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:26,729 INFO L225 Difference]: With dead ends: 4723 [2023-04-01 13:27:26,729 INFO L226 Difference]: Without dead ends: 3120 [2023-04-01 13:27:26,735 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 13:27:26,736 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 4 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:26,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2054 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 13:27:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2023-04-01 13:27:26,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 3116. [2023-04-01 13:27:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 1810 states have (on average 1.2486187845303867) internal successors, (2260), 1866 states have internal predecessors, (2260), 868 states have call successors, (868), 436 states have call predecessors, (868), 437 states have return successors, (890), 859 states have call predecessors, (890), 865 states have call successors, (890) [2023-04-01 13:27:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 4018 transitions. [2023-04-01 13:27:26,839 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 4018 transitions. Word has length 141 [2023-04-01 13:27:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:26,839 INFO L495 AbstractCegarLoop]: Abstraction has 3116 states and 4018 transitions. [2023-04-01 13:27:26,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-04-01 13:27:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 4018 transitions. [2023-04-01 13:27:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-01 13:27:26,846 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:26,846 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:26,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 13:27:26,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:26,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1601997941, now seen corresponding path program 1 times [2023-04-01 13:27:26,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:26,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766852346] [2023-04-01 13:27:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-04-01 13:27:27,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:27,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766852346] [2023-04-01 13:27:27,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766852346] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:27,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:27,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 13:27:27,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569571250] [2023-04-01 13:27:27,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 13:27:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 13:27:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-01 13:27:27,271 INFO L87 Difference]: Start difference. First operand 3116 states and 4018 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-04-01 13:27:32,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:27:35,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:27:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:37,108 INFO L93 Difference]: Finished difference Result 6461 states and 8371 transitions. [2023-04-01 13:27:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 13:27:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 142 [2023-04-01 13:27:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:37,132 INFO L225 Difference]: With dead ends: 6461 [2023-04-01 13:27:37,132 INFO L226 Difference]: Without dead ends: 3381 [2023-04-01 13:27:37,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-04-01 13:27:37,143 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 2481 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 5287 mSolverCounterSat, 1574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 6861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1574 IncrementalHoareTripleChecker+Valid, 5287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:37,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 1481 Invalid, 6861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1574 Valid, 5287 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-04-01 13:27:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2023-04-01 13:27:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3336. [2023-04-01 13:27:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 1931 states have (on average 1.244432936302434) internal successors, (2403), 1999 states have internal predecessors, (2403), 925 states have call successors, (925), 458 states have call predecessors, (925), 479 states have return successors, (982), 930 states have call predecessors, (982), 922 states have call successors, (982) [2023-04-01 13:27:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4310 transitions. [2023-04-01 13:27:37,347 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4310 transitions. Word has length 142 [2023-04-01 13:27:37,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:37,348 INFO L495 AbstractCegarLoop]: Abstraction has 3336 states and 4310 transitions. [2023-04-01 13:27:37,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-04-01 13:27:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4310 transitions. [2023-04-01 13:27:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-01 13:27:37,358 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:37,358 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:37,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 13:27:37,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:37,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2064522987, now seen corresponding path program 1 times [2023-04-01 13:27:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:37,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505590650] [2023-04-01 13:27:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:37,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 13:27:37,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:37,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505590650] [2023-04-01 13:27:37,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505590650] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:37,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:37,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 13:27:37,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870559495] [2023-04-01 13:27:37,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:37,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 13:27:37,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:37,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 13:27:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:27:37,706 INFO L87 Difference]: Start difference. First operand 3336 states and 4310 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 13:27:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:38,771 INFO L93 Difference]: Finished difference Result 6668 states and 8708 transitions. [2023-04-01 13:27:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 13:27:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 178 [2023-04-01 13:27:38,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:38,830 INFO L225 Difference]: With dead ends: 6668 [2023-04-01 13:27:38,830 INFO L226 Difference]: Without dead ends: 3368 [2023-04-01 13:27:38,841 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 13:27:38,842 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 2 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4105 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:38,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4105 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 13:27:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2023-04-01 13:27:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3356. [2023-04-01 13:27:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 1946 states have (on average 1.2425488180883864) internal successors, (2418), 2014 states have internal predecessors, (2418), 925 states have call successors, (925), 458 states have call predecessors, (925), 484 states have return successors, (991), 935 states have call predecessors, (991), 922 states have call successors, (991) [2023-04-01 13:27:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4334 transitions. [2023-04-01 13:27:39,008 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4334 transitions. Word has length 178 [2023-04-01 13:27:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:39,010 INFO L495 AbstractCegarLoop]: Abstraction has 3356 states and 4334 transitions. [2023-04-01 13:27:39,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 13:27:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4334 transitions. [2023-04-01 13:27:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-04-01 13:27:39,018 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:39,019 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:39,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 13:27:39,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:39,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 314979794, now seen corresponding path program 1 times [2023-04-01 13:27:39,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:39,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561730211] [2023-04-01 13:27:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:39,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-01 13:27:39,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:39,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561730211] [2023-04-01 13:27:39,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561730211] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:39,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:39,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:27:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500009862] [2023-04-01 13:27:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:39,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:27:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:27:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:27:39,230 INFO L87 Difference]: Start difference. First operand 3356 states and 4334 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-04-01 13:27:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:39,646 INFO L93 Difference]: Finished difference Result 6633 states and 8580 transitions. [2023-04-01 13:27:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:27:39,646 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), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 196 [2023-04-01 13:27:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:39,660 INFO L225 Difference]: With dead ends: 6633 [2023-04-01 13:27:39,660 INFO L226 Difference]: Without dead ends: 3300 [2023-04-01 13:27:39,669 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 13:27:39,669 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 1107 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:39,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1123 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 13:27:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-04-01 13:27:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3300. [2023-04-01 13:27:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 1914 states have (on average 1.2366771159874608) internal successors, (2367), 1980 states have internal predecessors, (2367), 912 states have call successors, (912), 447 states have call predecessors, (912), 473 states have return successors, (976), 922 states have call predecessors, (976), 909 states have call successors, (976) [2023-04-01 13:27:39,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4255 transitions. [2023-04-01 13:27:39,814 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4255 transitions. Word has length 196 [2023-04-01 13:27:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:39,815 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4255 transitions. [2023-04-01 13:27:39,815 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), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-04-01 13:27:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4255 transitions. [2023-04-01 13:27:39,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-04-01 13:27:39,823 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:39,823 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:39,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 13:27:39,823 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:39,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:39,823 INFO L85 PathProgramCache]: Analyzing trace with hash 771460305, now seen corresponding path program 1 times [2023-04-01 13:27:39,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:39,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113681532] [2023-04-01 13:27:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:39,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-04-01 13:27:40,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113681532] [2023-04-01 13:27:40,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113681532] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 13:27:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23059012] [2023-04-01 13:27:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:40,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:27:40,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:27:40,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:27:40,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 13:27:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:41,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-01 13:27:41,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:27:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 13:27:41,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 13:27:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-04-01 13:27:43,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23059012] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 13:27:43,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 13:27:43,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 24 [2023-04-01 13:27:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019139721] [2023-04-01 13:27:43,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:43,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 13:27:43,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:43,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 13:27:43,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-04-01 13:27:43,649 INFO L87 Difference]: Start difference. First operand 3300 states and 4255 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 6 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (36), 7 states have call predecessors, (36), 6 states have call successors, (36) [2023-04-01 13:27:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:52,254 INFO L93 Difference]: Finished difference Result 7650 states and 10211 transitions. [2023-04-01 13:27:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 13:27:52,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 6 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (36), 7 states have call predecessors, (36), 6 states have call successors, (36) Word has length 204 [2023-04-01 13:27:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:52,282 INFO L225 Difference]: With dead ends: 7650 [2023-04-01 13:27:52,282 INFO L226 Difference]: Without dead ends: 5800 [2023-04-01 13:27:52,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 409 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=847, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 13:27:52,291 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 4139 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 5462 mSolverCounterSat, 3297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4211 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 8759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3297 IncrementalHoareTripleChecker+Valid, 5462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:52,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4211 Valid, 1990 Invalid, 8759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3297 Valid, 5462 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-04-01 13:27:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2023-04-01 13:27:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 5092. [2023-04-01 13:27:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 2948 states have (on average 1.237788331071913) internal successors, (3649), 3059 states have internal predecessors, (3649), 1404 states have call successors, (1404), 675 states have call predecessors, (1404), 739 states have return successors, (1552), 1436 states have call predecessors, (1552), 1401 states have call successors, (1552) [2023-04-01 13:27:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 6605 transitions. [2023-04-01 13:27:52,577 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 6605 transitions. Word has length 204 [2023-04-01 13:27:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:52,578 INFO L495 AbstractCegarLoop]: Abstraction has 5092 states and 6605 transitions. [2023-04-01 13:27:52,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 6 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (36), 7 states have call predecessors, (36), 6 states have call successors, (36) [2023-04-01 13:27:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 6605 transitions. [2023-04-01 13:27:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-04-01 13:27:52,587 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:52,587 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:52,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 13:27:52,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:27:52,814 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:52,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:52,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1174018969, now seen corresponding path program 1 times [2023-04-01 13:27:52,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:52,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907975213] [2023-04-01 13:27:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:52,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-01 13:27:53,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:53,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907975213] [2023-04-01 13:27:53,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907975213] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:53,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:53,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 13:27:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381538284] [2023-04-01 13:27:53,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:53,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 13:27:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 13:27:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 13:27:53,024 INFO L87 Difference]: Start difference. First operand 5092 states and 6605 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-01 13:27:53,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:53,988 INFO L93 Difference]: Finished difference Result 8711 states and 11366 transitions. [2023-04-01 13:27:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 13:27:53,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 205 [2023-04-01 13:27:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:54,011 INFO L225 Difference]: With dead ends: 8711 [2023-04-01 13:27:54,011 INFO L226 Difference]: Without dead ends: 5115 [2023-04-01 13:27:54,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:27:54,032 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 10 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:54,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3079 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 13:27:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5115 states. [2023-04-01 13:27:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5115 to 5100. [2023-04-01 13:27:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 2956 states have (on average 1.2388362652232747) internal successors, (3662), 3067 states have internal predecessors, (3662), 1404 states have call successors, (1404), 675 states have call predecessors, (1404), 739 states have return successors, (1552), 1436 states have call predecessors, (1552), 1401 states have call successors, (1552) [2023-04-01 13:27:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 6618 transitions. [2023-04-01 13:27:54,236 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 6618 transitions. Word has length 205 [2023-04-01 13:27:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:54,237 INFO L495 AbstractCegarLoop]: Abstraction has 5100 states and 6618 transitions. [2023-04-01 13:27:54,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-01 13:27:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 6618 transitions. [2023-04-01 13:27:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-04-01 13:27:54,245 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:54,245 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 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] [2023-04-01 13:27:54,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 13:27:54,246 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:54,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:54,246 INFO L85 PathProgramCache]: Analyzing trace with hash 657049262, now seen corresponding path program 1 times [2023-04-01 13:27:54,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:54,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184788419] [2023-04-01 13:27:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:54,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-04-01 13:27:55,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:55,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184788419] [2023-04-01 13:27:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184788419] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 13:27:55,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940660715] [2023-04-01 13:27:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:55,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:27:55,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:27:55,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:27:55,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 13:27:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:56,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 56 conjunts are in the unsatisfiable core [2023-04-01 13:27:56,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:27:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-04-01 13:27:56,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 13:27:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-04-01 13:27:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940660715] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 13:27:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1802727091] [2023-04-01 13:27:57,530 INFO L159 IcfgInterpreter]: Started Sifa with 180 locations of interest [2023-04-01 13:27:57,531 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 13:27:57,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 13:27:57,537 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 13:27:57,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 13:28:03,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 103 for LOIs [2023-04-01 13:28:04,041 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 519 for LOIs