./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:35:45,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:35:45,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:35:45,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:35:45,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:35:45,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:35:45,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:35:45,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:35:45,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:35:45,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:35:45,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:35:45,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:35:45,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:35:45,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:35:45,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:35:45,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:35:45,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:35:45,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:35:45,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:35:45,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:35:45,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:35:45,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:35:45,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:35:45,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:35:45,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:35:45,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:35:45,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:35:45,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:35:45,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:35:45,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:35:45,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:35:45,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:35:45,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:35:45,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:35:45,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:35:45,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:35:45,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:35:45,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:35:45,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:35:45,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:35:45,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:35:45,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:35:45,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:35:45,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:35:45,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:35:45,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:35:45,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:35:45,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:35:45,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:35:45,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:35:45,451 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:35:45,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:35:45,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:35:45,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:35:45,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:35:45,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:35:45,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:35:45,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:35:45,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:35:45,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:35:45,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:35:45,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:35:45,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:35:45,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:35:45,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:35:45,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:35:45,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:35:45,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:35:45,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:35:45,455 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:35:45,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:35:45,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:35:45,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:35:45,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 [2021-12-14 17:35:45,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:35:45,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:35:45,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:35:45,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:35:45,668 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:35:45,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2021-12-14 17:35:45,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb0d0f392/6321d4e810b740b9af59e97c80beb386/FLAGe4153b326 [2021-12-14 17:35:46,367 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:35:46,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2021-12-14 17:35:46,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb0d0f392/6321d4e810b740b9af59e97c80beb386/FLAGe4153b326 [2021-12-14 17:35:46,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb0d0f392/6321d4e810b740b9af59e97c80beb386 [2021-12-14 17:35:46,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:35:46,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:35:46,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:35:46,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:35:46,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:35:46,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:35:46" (1/1) ... [2021-12-14 17:35:46,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bdeded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:46, skipping insertion in model container [2021-12-14 17:35:46,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:35:46" (1/1) ... [2021-12-14 17:35:46,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:35:46,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:35:47,807 WARN L230 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2021-12-14 17:35:47,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:35:47,924 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:35:48,187 WARN L230 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2021-12-14 17:35:48,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:35:48,275 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:35:48,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48 WrapperNode [2021-12-14 17:35:48,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:35:48,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:35:48,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:35:48,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:35:48,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,455 INFO L137 Inliner]: procedures = 389, calls = 2919, calls flagged for inlining = 156, calls inlined = 64, statements flattened = 3287 [2021-12-14 17:35:48,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:35:48,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:35:48,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:35:48,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:35:48,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:35:48,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:35:48,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:35:48,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:35:48,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (1/1) ... [2021-12-14 17:35:48,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:35:48,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:35:48,712 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) [2021-12-14 17:35:48,718 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 [2021-12-14 17:35:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2021-12-14 17:35:48,738 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2021-12-14 17:35:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-14 17:35:48,739 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-14 17:35:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:35:48,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:35:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2021-12-14 17:35:48,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2021-12-14 17:35:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2021-12-14 17:35:48,739 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2021-12-14 17:35:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 17:35:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 17:35:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2021-12-14 17:35:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2021-12-14 17:35:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2021-12-14 17:35:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2021-12-14 17:35:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:35:48,740 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:35:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2021-12-14 17:35:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2021-12-14 17:35:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-12-14 17:35:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-12-14 17:35:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2021-12-14 17:35:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2021-12-14 17:35:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:35:48,741 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:35:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2021-12-14 17:35:48,742 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2021-12-14 17:35:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:35:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2021-12-14 17:35:48,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2021-12-14 17:35:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure PDE [2021-12-14 17:35:48,742 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE [2021-12-14 17:35:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 17:35:48,742 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 17:35:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:35:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:35:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2021-12-14 17:35:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2021-12-14 17:35:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:35:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2021-12-14 17:35:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2021-12-14 17:35:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:35:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-14 17:35:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-14 17:35:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:35:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:35:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:35:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2021-12-14 17:35:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2021-12-14 17:35:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:35:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:35:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-14 17:35:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-14 17:35:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-12-14 17:35:48,746 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-12-14 17:35:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:35:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2021-12-14 17:35:48,747 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2021-12-14 17:35:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-14 17:35:48,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-14 17:35:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:35:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2021-12-14 17:35:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2021-12-14 17:35:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:35:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:35:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:35:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:35:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2021-12-14 17:35:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2021-12-14 17:35:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-14 17:35:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-14 17:35:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-14 17:35:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-14 17:35:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2021-12-14 17:35:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2021-12-14 17:35:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2021-12-14 17:35:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2021-12-14 17:35:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:35:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:35:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2021-12-14 17:35:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2021-12-14 17:35:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:35:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:35:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-12-14 17:35:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-14 17:35:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-14 17:35:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:35:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:35:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2021-12-14 17:35:48,751 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2021-12-14 17:35:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:35:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:35:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:35:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:35:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-14 17:35:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-14 17:35:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2021-12-14 17:35:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2021-12-14 17:35:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:35:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:35:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:35:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:35:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:35:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2021-12-14 17:35:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2021-12-14 17:35:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:35:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:35:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2021-12-14 17:35:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2021-12-14 17:35:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:35:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:35:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2021-12-14 17:35:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2021-12-14 17:35:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-14 17:35:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-14 17:35:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2021-12-14 17:35:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2021-12-14 17:35:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2021-12-14 17:35:48,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2021-12-14 17:35:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-12-14 17:35:48,758 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-12-14 17:35:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-14 17:35:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-14 17:35:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2021-12-14 17:35:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2021-12-14 17:35:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-14 17:35:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-14 17:35:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2021-12-14 17:35:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2021-12-14 17:35:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:35:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:35:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:35:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:35:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:35:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2021-12-14 17:35:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2021-12-14 17:35:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2021-12-14 17:35:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2021-12-14 17:35:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-14 17:35:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-14 17:35:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-14 17:35:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-14 17:35:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2021-12-14 17:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2021-12-14 17:35:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-14 17:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-14 17:35:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2021-12-14 17:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2021-12-14 17:35:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-14 17:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-14 17:35:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-14 17:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-14 17:35:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 17:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 17:35:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2021-12-14 17:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2021-12-14 17:35:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2021-12-14 17:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2021-12-14 17:35:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-12-14 17:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-12-14 17:35:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:35:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2021-12-14 17:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2021-12-14 17:35:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-14 17:35:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-14 17:35:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-14 17:35:49,209 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:35:49,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:35:55,097 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:35:55,115 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:35:55,116 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:35:55,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:35:55 BoogieIcfgContainer [2021-12-14 17:35:55,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:35:55,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:35:55,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:35:55,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:35:55,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:35:46" (1/3) ... [2021-12-14 17:35:55,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34034aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:35:55, skipping insertion in model container [2021-12-14 17:35:55,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:48" (2/3) ... [2021-12-14 17:35:55,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34034aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:35:55, skipping insertion in model container [2021-12-14 17:35:55,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:35:55" (3/3) ... [2021-12-14 17:35:55,124 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2021-12-14 17:35:55,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:35:55,127 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:35:55,166 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:35:55,170 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:35:55,170 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:35:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 1221 states, 841 states have (on average 1.3626634958382877) internal successors, (1146), 891 states have internal predecessors, (1146), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) [2021-12-14 17:35:55,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 17:35:55,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:35:55,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:35:55,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:35:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:35:55,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1371765540, now seen corresponding path program 1 times [2021-12-14 17:35:55,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:35:55,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133467734] [2021-12-14 17:35:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:35:55,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:35:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:35:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:35:55,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:35:55,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133467734] [2021-12-14 17:35:55,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133467734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:35:55,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:35:55,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:35:55,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364172350] [2021-12-14 17:35:55,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:35:55,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:35:55,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:35:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:35:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:35:55,580 INFO L87 Difference]: Start difference. First operand has 1221 states, 841 states have (on average 1.3626634958382877) internal successors, (1146), 891 states have internal predecessors, (1146), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:35:55,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:35:55,792 INFO L93 Difference]: Finished difference Result 3588 states and 5271 transitions. [2021-12-14 17:35:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:35:55,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-14 17:35:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:35:55,819 INFO L225 Difference]: With dead ends: 3588 [2021-12-14 17:35:55,819 INFO L226 Difference]: Without dead ends: 2366 [2021-12-14 17:35:55,831 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:35:55,833 INFO L933 BasicCegarLoop]: 2781 mSDtfsCounter, 1675 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:35:55,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 4481 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:35:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2021-12-14 17:35:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2362. [2021-12-14 17:35:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 1629 states have (on average 1.3597298956414978) internal successors, (2215), 1716 states have internal predecessors, (2215), 590 states have call successors, (590), 143 states have call predecessors, (590), 142 states have return successors, (580), 568 states have call predecessors, (580), 580 states have call successors, (580) [2021-12-14 17:35:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3385 transitions. [2021-12-14 17:35:55,970 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3385 transitions. Word has length 16 [2021-12-14 17:35:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:35:55,970 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 3385 transitions. [2021-12-14 17:35:55,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:35:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3385 transitions. [2021-12-14 17:35:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-14 17:35:55,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:35:55,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:35:55,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:35:55,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:35:55,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:35:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash 24298474, now seen corresponding path program 1 times [2021-12-14 17:35:55,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:35:55,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581581204] [2021-12-14 17:35:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:35:55,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:35:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:35:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:35:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:35:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:35:56,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:35:56,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581581204] [2021-12-14 17:35:56,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581581204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:35:56,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:35:56,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:35:56,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684299737] [2021-12-14 17:35:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:35:56,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:35:56,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:35:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:35:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:35:56,112 INFO L87 Difference]: Start difference. First operand 2362 states and 3385 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:07,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:09,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:13,856 INFO L93 Difference]: Finished difference Result 7335 states and 10672 transitions. [2021-12-14 17:36:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:36:13,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-14 17:36:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:13,878 INFO L225 Difference]: With dead ends: 7335 [2021-12-14 17:36:13,878 INFO L226 Difference]: Without dead ends: 4976 [2021-12-14 17:36:13,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:36:13,886 INFO L933 BasicCegarLoop]: 2018 mSDtfsCounter, 2990 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 6332 mSolverCounterSat, 2068 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 8402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2068 IncrementalHoareTripleChecker+Valid, 6332 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:13,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3314 Valid, 2742 Invalid, 8402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2068 Valid, 6332 Invalid, 2 Unknown, 0 Unchecked, 17.3s Time] [2021-12-14 17:36:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2021-12-14 17:36:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4668. [2021-12-14 17:36:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4668 states, 3222 states have (on average 1.3597144630664184) internal successors, (4381), 3388 states have internal predecessors, (4381), 1163 states have call successors, (1163), 282 states have call predecessors, (1163), 282 states have return successors, (1156), 1129 states have call predecessors, (1156), 1153 states have call successors, (1156) [2021-12-14 17:36:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 6700 transitions. [2021-12-14 17:36:14,113 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 6700 transitions. Word has length 23 [2021-12-14 17:36:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:14,114 INFO L470 AbstractCegarLoop]: Abstraction has 4668 states and 6700 transitions. [2021-12-14 17:36:14,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 6700 transitions. [2021-12-14 17:36:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-14 17:36:14,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:14,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:14,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:36:14,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash -46651610, now seen corresponding path program 1 times [2021-12-14 17:36:14,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:14,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509837062] [2021-12-14 17:36:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:14,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:36:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:14,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:14,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509837062] [2021-12-14 17:36:14,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509837062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:14,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:14,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:36:14,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541993225] [2021-12-14 17:36:14,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:14,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:36:14,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:14,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:36:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:14,243 INFO L87 Difference]: Start difference. First operand 4668 states and 6700 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:19,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:21,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:21,853 INFO L93 Difference]: Finished difference Result 8402 states and 12170 transitions. [2021-12-14 17:36:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:21,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-14 17:36:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:21,872 INFO L225 Difference]: With dead ends: 8402 [2021-12-14 17:36:21,872 INFO L226 Difference]: Without dead ends: 3737 [2021-12-14 17:36:21,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:36:21,920 INFO L933 BasicCegarLoop]: 1732 mSDtfsCounter, 2092 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 605 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:21,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2269 Valid, 3354 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1579 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-12-14 17:36:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-12-14 17:36:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3521. [2021-12-14 17:36:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3521 states, 2430 states have (on average 1.3584362139917696) internal successors, (3301), 2557 states have internal predecessors, (3301), 877 states have call successors, (877), 213 states have call predecessors, (877), 213 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2021-12-14 17:36:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 5048 transitions. [2021-12-14 17:36:22,052 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 5048 transitions. Word has length 25 [2021-12-14 17:36:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:22,052 INFO L470 AbstractCegarLoop]: Abstraction has 3521 states and 5048 transitions. [2021-12-14 17:36:22,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 5048 transitions. [2021-12-14 17:36:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-14 17:36:22,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:22,055 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:36:22,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:36:22,055 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1054871817, now seen corresponding path program 1 times [2021-12-14 17:36:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341417094] [2021-12-14 17:36:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:22,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:36:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-14 17:36:22,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:22,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341417094] [2021-12-14 17:36:22,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341417094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:22,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:22,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:22,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26114769] [2021-12-14 17:36:22,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:22,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:22,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:22,183 INFO L87 Difference]: Start difference. First operand 3521 states and 5048 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:26,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:28,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:30,229 INFO L93 Difference]: Finished difference Result 3759 states and 5483 transitions. [2021-12-14 17:36:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-14 17:36:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:30,245 INFO L225 Difference]: With dead ends: 3759 [2021-12-14 17:36:30,245 INFO L226 Difference]: Without dead ends: 3755 [2021-12-14 17:36:30,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:30,248 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 1832 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 558 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:30,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1993 Valid, 1811 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 1057 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-12-14 17:36:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2021-12-14 17:36:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3537. [2021-12-14 17:36:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 2442 states have (on average 1.355036855036855) internal successors, (3309), 2567 states have internal predecessors, (3309), 875 states have call successors, (875), 219 states have call predecessors, (875), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2021-12-14 17:36:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5054 transitions. [2021-12-14 17:36:30,360 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5054 transitions. Word has length 35 [2021-12-14 17:36:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:30,360 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 5054 transitions. [2021-12-14 17:36:30,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5054 transitions. [2021-12-14 17:36:30,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:36:30,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:30,362 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:36:30,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:36:30,362 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1659366227, now seen corresponding path program 1 times [2021-12-14 17:36:30,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:30,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579595274] [2021-12-14 17:36:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:30,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:30,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:36:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-14 17:36:30,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:30,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579595274] [2021-12-14 17:36:30,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579595274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:30,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:30,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:30,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173437693] [2021-12-14 17:36:30,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:30,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:30,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:30,500 INFO L87 Difference]: Start difference. First operand 3537 states and 5054 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:34,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:38,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:38,186 INFO L93 Difference]: Finished difference Result 3755 states and 5476 transitions. [2021-12-14 17:36:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:36:38,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-14 17:36:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:38,201 INFO L225 Difference]: With dead ends: 3755 [2021-12-14 17:36:38,202 INFO L226 Difference]: Without dead ends: 3752 [2021-12-14 17:36:38,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:38,204 INFO L933 BasicCegarLoop]: 1567 mSDtfsCounter, 1852 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 538 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:38,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2034 Valid, 1790 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-12-14 17:36:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-12-14 17:36:38,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3536. [2021-12-14 17:36:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 2442 states have (on average 1.3546273546273546) internal successors, (3308), 2566 states have internal predecessors, (3308), 874 states have call successors, (874), 219 states have call predecessors, (874), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2021-12-14 17:36:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5052 transitions. [2021-12-14 17:36:38,324 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5052 transitions. Word has length 36 [2021-12-14 17:36:38,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:38,324 INFO L470 AbstractCegarLoop]: Abstraction has 3536 states and 5052 transitions. [2021-12-14 17:36:38,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5052 transitions. [2021-12-14 17:36:38,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 17:36:38,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:38,327 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:36:38,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:36:38,328 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:38,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 98605196, now seen corresponding path program 1 times [2021-12-14 17:36:38,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:38,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280720841] [2021-12-14 17:36:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:38,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:38,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:36:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-14 17:36:38,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:38,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280720841] [2021-12-14 17:36:38,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280720841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:38,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:38,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:38,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62365177] [2021-12-14 17:36:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:38,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:38,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:38,430 INFO L87 Difference]: Start difference. First operand 3536 states and 5052 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:43,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:44,237 INFO L93 Difference]: Finished difference Result 3754 states and 5474 transitions. [2021-12-14 17:36:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:36:44,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-14 17:36:44,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:44,252 INFO L225 Difference]: With dead ends: 3754 [2021-12-14 17:36:44,252 INFO L226 Difference]: Without dead ends: 3751 [2021-12-14 17:36:44,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:44,254 INFO L933 BasicCegarLoop]: 1566 mSDtfsCounter, 1850 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 535 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:44,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 1789 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-12-14 17:36:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-12-14 17:36:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3535. [2021-12-14 17:36:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 2442 states have (on average 1.3542178542178542) internal successors, (3307), 2565 states have internal predecessors, (3307), 873 states have call successors, (873), 219 states have call predecessors, (873), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2021-12-14 17:36:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5050 transitions. [2021-12-14 17:36:44,391 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5050 transitions. Word has length 37 [2021-12-14 17:36:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:44,392 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 5050 transitions. [2021-12-14 17:36:44,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5050 transitions. [2021-12-14 17:36:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 17:36:44,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:44,394 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:36:44,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:36:44,394 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1238850672, now seen corresponding path program 1 times [2021-12-14 17:36:44,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:44,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280567193] [2021-12-14 17:36:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:44,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:36:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-14 17:36:44,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:44,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280567193] [2021-12-14 17:36:44,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280567193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:44,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:44,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:44,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781724736] [2021-12-14 17:36:44,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:44,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:44,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:44,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:44,488 INFO L87 Difference]: Start difference. First operand 3535 states and 5050 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:50,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:50,222 INFO L93 Difference]: Finished difference Result 3753 states and 5472 transitions. [2021-12-14 17:36:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:36:50,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-14 17:36:50,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:50,236 INFO L225 Difference]: With dead ends: 3753 [2021-12-14 17:36:50,236 INFO L226 Difference]: Without dead ends: 3750 [2021-12-14 17:36:50,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:50,238 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 1847 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:50,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2027 Valid, 1788 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-12-14 17:36:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-12-14 17:36:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3534. [2021-12-14 17:36:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3534 states, 2442 states have (on average 1.3538083538083538) internal successors, (3306), 2564 states have internal predecessors, (3306), 872 states have call successors, (872), 219 states have call predecessors, (872), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2021-12-14 17:36:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 5048 transitions. [2021-12-14 17:36:50,368 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 5048 transitions. Word has length 38 [2021-12-14 17:36:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:50,369 INFO L470 AbstractCegarLoop]: Abstraction has 3534 states and 5048 transitions. [2021-12-14 17:36:50,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:36:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 5048 transitions. [2021-12-14 17:36:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-14 17:36:50,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:50,370 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:36:50,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:36:50,370 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash 249695247, now seen corresponding path program 1 times [2021-12-14 17:36:50,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:50,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664561177] [2021-12-14 17:36:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:50,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:36:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-14 17:36:50,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:50,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664561177] [2021-12-14 17:36:50,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664561177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:50,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:50,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:50,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137014788] [2021-12-14 17:36:50,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:50,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:50,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:50,450 INFO L87 Difference]: Start difference. First operand 3534 states and 5048 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)