/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:57:27,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:57:27,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:57:27,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:57:27,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:57:27,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:57:27,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:57:27,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:57:27,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:57:27,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:57:27,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:57:27,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:57:27,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:57:27,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:57:27,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:57:27,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:57:27,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:57:27,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:57:27,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:57:27,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:57:27,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:57:27,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:57:27,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:57:27,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:57:27,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:57:27,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:57:27,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:57:27,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:57:27,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:57:27,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:57:27,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:57:27,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:57:27,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:57:27,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:57:27,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:57:27,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:57:27,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:57:27,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:57:27,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:57:27,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:57:27,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:57:27,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:57:27,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:57:27,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:57:27,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:57:27,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:57:27,577 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:57:27,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:57:27,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:57:27,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:57:27,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:57:27,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:57:27,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:57:27,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:57:27,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:57:27,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:57:27,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:57:27,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:57:27,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:57:27,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:57:27,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:57:27,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:57:27,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:57:27,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:57:27,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:57:27,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:57:27,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:57:27,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:57:28,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:57:28,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:57:28,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:57:28,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:57:28,102 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:57:28,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2020-12-22 13:57:28,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec028d51/4e8df82750d14a6cae8d934998397286/FLAG888948253 [2020-12-22 13:57:29,457 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:57:29,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2020-12-22 13:57:29,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec028d51/4e8df82750d14a6cae8d934998397286/FLAG888948253 [2020-12-22 13:57:29,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec028d51/4e8df82750d14a6cae8d934998397286 [2020-12-22 13:57:29,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:57:29,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:57:29,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:57:29,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:57:29,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:57:29,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:57:29" (1/1) ... [2020-12-22 13:57:29,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da3e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:29, skipping insertion in model container [2020-12-22 13:57:29,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:57:29" (1/1) ... [2020-12-22 13:57:29,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:57:29,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:57:33,747 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i[376341,376354] [2020-12-22 13:57:33,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:57:33,894 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:57:34,522 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i[376341,376354] [2020-12-22 13:57:34,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:57:36,084 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:57:36,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36 WrapperNode [2020-12-22 13:57:36,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:57:36,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:57:36,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:57:36,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:57:36,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:36,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:41,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:57:41,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:57:41,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:57:41,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:57:41,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:41,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:42,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:42,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:45,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:45,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:46,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... [2020-12-22 13:57:47,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:57:47,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:57:47,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:57:47,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:57:47,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:57:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-12-22 13:57:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2020-12-22 13:57:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2020-12-22 13:57:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2020-12-22 13:57:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2020-12-22 13:57:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2020-12-22 13:57:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2020-12-22 13:57:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2020-12-22 13:57:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2020-12-22 13:57:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2020-12-22 13:57:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2020-12-22 13:57:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2020-12-22 13:57:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2020-12-22 13:57:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2020-12-22 13:57:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 13:57:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2020-12-22 13:57:47,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2020-12-22 13:57:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:57:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:57:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:57:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2020-12-22 13:57:47,913 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2020-12-22 13:57:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:57:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2020-12-22 13:57:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2020-12-22 13:57:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2020-12-22 13:57:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2020-12-22 13:57:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2020-12-22 13:57:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2020-12-22 13:57:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_12 [2020-12-22 13:57:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_12 [2020-12-22 13:57:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:57:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2020-12-22 13:57:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2020-12-22 13:57:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:57:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:57:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:57:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2020-12-22 13:57:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2020-12-22 13:57:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2020-12-22 13:57:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2020-12-22 13:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:57:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_11 [2020-12-22 13:57:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_11 [2020-12-22 13:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2020-12-22 13:57:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2020-12-22 13:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:57:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:57:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2020-12-22 13:57:47,918 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2020-12-22 13:57:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:57:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:57:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2020-12-22 13:57:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2020-12-22 13:57:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2020-12-22 13:57:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2020-12-22 13:57:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2020-12-22 13:57:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2020-12-22 13:57:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:57:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2020-12-22 13:57:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2020-12-22 13:57:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2020-12-22 13:57:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2020-12-22 13:57:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2020-12-22 13:57:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2020-12-22 13:57:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2020-12-22 13:57:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:57:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2020-12-22 13:57:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2020-12-22 13:57:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2020-12-22 13:57:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2020-12-22 13:57:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2020-12-22 13:57:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2020-12-22 13:57:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2020-12-22 13:57:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2020-12-22 13:57:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2020-12-22 13:57:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2020-12-22 13:57:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2020-12-22 13:57:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2020-12-22 13:57:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2020-12-22 13:57:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2020-12-22 13:57:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2020-12-22 13:57:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2020-12-22 13:57:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2020-12-22 13:57:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:57:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-12-22 13:59:23,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:59:23,871 INFO L299 CfgBuilder]: Removed 35674 assume(true) statements. [2020-12-22 13:59:23,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:59:23 BoogieIcfgContainer [2020-12-22 13:59:23,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:59:23,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:59:23,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:59:23,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:59:23,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:57:29" (1/3) ... [2020-12-22 13:59:23,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bfca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:59:23, skipping insertion in model container [2020-12-22 13:59:23,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:36" (2/3) ... [2020-12-22 13:59:23,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bfca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:59:23, skipping insertion in model container [2020-12-22 13:59:23,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:59:23" (3/3) ... [2020-12-22 13:59:23,903 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2020-12-22 13:59:23,910 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:59:23,921 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 13:59:23,941 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 13:59:24,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:59:24,032 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:59:24,032 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:59:24,032 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:59:24,032 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:59:24,032 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:59:24,032 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:59:24,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:59:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 25806 states. [2020-12-22 13:59:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 13:59:24,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:24,309 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:24,309 INFO L429 AbstractCegarLoop]: === Iteration 1 === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:24,315 INFO L82 PathProgramCache]: Analyzing trace with hash 112333456, now seen corresponding path program 1 times [2020-12-22 13:59:24,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:24,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188360294] [2020-12-22 13:59:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:59:25,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188360294] [2020-12-22 13:59:25,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:59:25,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:59:25,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127245114] [2020-12-22 13:59:25,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:59:25,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:59:25,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:59:25,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:59:25,496 INFO L87 Difference]: Start difference. First operand 25806 states. Second operand 2 states. [2020-12-22 13:59:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:59:26,618 INFO L93 Difference]: Finished difference Result 51608 states and 66881 transitions. [2020-12-22 13:59:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:59:26,624 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 76 [2020-12-22 13:59:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:59:26,801 INFO L225 Difference]: With dead ends: 51608 [2020-12-22 13:59:26,802 INFO L226 Difference]: Without dead ends: 25185 [2020-12-22 13:59:26,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:59:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2020-12-22 13:59:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 25185. [2020-12-22 13:59:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25185 states. [2020-12-22 13:59:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25185 states to 25185 states and 31441 transitions. [2020-12-22 13:59:28,174 INFO L78 Accepts]: Start accepts. Automaton has 25185 states and 31441 transitions. Word has length 76 [2020-12-22 13:59:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:59:28,174 INFO L481 AbstractCegarLoop]: Abstraction has 25185 states and 31441 transitions. [2020-12-22 13:59:28,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:59:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 25185 states and 31441 transitions. [2020-12-22 13:59:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 13:59:28,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:28,187 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:28,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:59:28,188 INFO L429 AbstractCegarLoop]: === Iteration 2 === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:28,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:28,190 INFO L82 PathProgramCache]: Analyzing trace with hash 990491810, now seen corresponding path program 1 times [2020-12-22 13:59:28,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:28,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39352654] [2020-12-22 13:59:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:59:28,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39352654] [2020-12-22 13:59:28,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:59:28,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:59:28,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725747624] [2020-12-22 13:59:28,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:59:28,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:59:28,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:59:28,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:59:28,918 INFO L87 Difference]: Start difference. First operand 25185 states and 31441 transitions. Second operand 3 states. [2020-12-22 13:59:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:59:33,269 INFO L93 Difference]: Finished difference Result 75387 states and 94134 transitions. [2020-12-22 13:59:33,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:59:33,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 13:59:33,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:59:33,517 INFO L225 Difference]: With dead ends: 75387 [2020-12-22 13:59:33,517 INFO L226 Difference]: Without dead ends: 50267 [2020-12-22 13:59:33,589 INFO L677 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 [2020-12-22 13:59:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50267 states. [2020-12-22 13:59:35,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50267 to 50263. [2020-12-22 13:59:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50263 states. [2020-12-22 13:59:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50263 states to 50263 states and 62761 transitions. [2020-12-22 13:59:35,385 INFO L78 Accepts]: Start accepts. Automaton has 50263 states and 62761 transitions. Word has length 76 [2020-12-22 13:59:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:59:35,385 INFO L481 AbstractCegarLoop]: Abstraction has 50263 states and 62761 transitions. [2020-12-22 13:59:35,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:59:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 50263 states and 62761 transitions. [2020-12-22 13:59:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 13:59:35,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:35,388 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:35,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:59:35,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:35,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1067076941, now seen corresponding path program 1 times [2020-12-22 13:59:35,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:35,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044207143] [2020-12-22 13:59:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:59:36,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044207143] [2020-12-22 13:59:36,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:59:36,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:59:36,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350412206] [2020-12-22 13:59:36,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:59:36,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:59:36,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:59:36,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:59:36,041 INFO L87 Difference]: Start difference. First operand 50263 states and 62761 transitions. Second operand 3 states. [2020-12-22 13:59:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:59:38,624 INFO L93 Difference]: Finished difference Result 150653 states and 188296 transitions. [2020-12-22 13:59:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:59:38,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 13:59:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:59:39,032 INFO L225 Difference]: With dead ends: 150653 [2020-12-22 13:59:39,032 INFO L226 Difference]: Without dead ends: 100452 [2020-12-22 13:59:39,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:59:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100452 states. [2020-12-22 13:59:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100452 to 100446. [2020-12-22 13:59:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100446 states. [2020-12-22 13:59:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100446 states to 100446 states and 125431 transitions. [2020-12-22 13:59:43,103 INFO L78 Accepts]: Start accepts. Automaton has 100446 states and 125431 transitions. Word has length 79 [2020-12-22 13:59:43,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:59:43,104 INFO L481 AbstractCegarLoop]: Abstraction has 100446 states and 125431 transitions. [2020-12-22 13:59:43,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:59:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 100446 states and 125431 transitions. [2020-12-22 13:59:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 13:59:43,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:43,115 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:43,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:59:43,116 INFO L429 AbstractCegarLoop]: === Iteration 4 === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:43,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:43,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2029203233, now seen corresponding path program 1 times [2020-12-22 13:59:43,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:43,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881224493] [2020-12-22 13:59:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-12-22 13:59:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:59:44,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881224493] [2020-12-22 13:59:44,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509247164] [2020-12-22 13:59:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:59:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:48,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:59:48,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:59:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:59:48,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:59:48,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2020-12-22 13:59:48,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363843845] [2020-12-22 13:59:48,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:59:48,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:59:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:59:48,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:59:48,676 INFO L87 Difference]: Start difference. First operand 100446 states and 125431 transitions. Second operand 5 states. [2020-12-22 13:59:51,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:59:51,739 INFO L93 Difference]: Finished difference Result 200939 states and 251285 transitions. [2020-12-22 13:59:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:59:51,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-12-22 13:59:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:59:52,606 INFO L225 Difference]: With dead ends: 200939 [2020-12-22 13:59:52,608 INFO L226 Difference]: Without dead ends: 100558 [2020-12-22 13:59:53,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:59:53,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100558 states. [2020-12-22 13:59:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100558 to 100558. [2020-12-22 13:59:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100558 states. [2020-12-22 13:59:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100558 states to 100558 states and 125551 transitions. [2020-12-22 13:59:56,722 INFO L78 Accepts]: Start accepts. Automaton has 100558 states and 125551 transitions. Word has length 106 [2020-12-22 13:59:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:59:56,723 INFO L481 AbstractCegarLoop]: Abstraction has 100558 states and 125551 transitions. [2020-12-22 13:59:56,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:59:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 100558 states and 125551 transitions. [2020-12-22 13:59:56,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 13:59:56,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:56,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:56,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:59:56,977 INFO L429 AbstractCegarLoop]: === Iteration 5 === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:56,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1329452238, now seen corresponding path program 1 times [2020-12-22 13:59:56,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:56,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432128327] [2020-12-22 13:59:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-12-22 13:59:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-12-22 13:59:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:59:58,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432128327] [2020-12-22 13:59:58,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375281510] [2020-12-22 13:59:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:00:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:02,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 3694 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 14:00:02,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:00:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:00:02,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:00:02,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2020-12-22 14:00:02,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693283935] [2020-12-22 14:00:02,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:00:02,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:02,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:00:02,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-22 14:00:02,444 INFO L87 Difference]: Start difference. First operand 100558 states and 125551 transitions. Second operand 5 states. [2020-12-22 14:00:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:05,124 INFO L93 Difference]: Finished difference Result 201183 states and 251581 transitions. [2020-12-22 14:00:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 14:00:05,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-12-22 14:00:05,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:05,719 INFO L225 Difference]: With dead ends: 201183 [2020-12-22 14:00:05,719 INFO L226 Difference]: Without dead ends: 100690 [2020-12-22 14:00:05,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-12-22 14:00:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100690 states. [2020-12-22 14:00:08,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100690 to 100682. [2020-12-22 14:00:08,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100682 states. [2020-12-22 14:00:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100682 states to 100682 states and 125707 transitions. [2020-12-22 14:00:08,841 INFO L78 Accepts]: Start accepts. Automaton has 100682 states and 125707 transitions. Word has length 118 [2020-12-22 14:00:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:08,842 INFO L481 AbstractCegarLoop]: Abstraction has 100682 states and 125707 transitions. [2020-12-22 14:00:08,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:00:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 100682 states and 125707 transitions. [2020-12-22 14:00:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 14:00:08,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:08,857 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:09,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:00:09,073 INFO L429 AbstractCegarLoop]: === Iteration 6 === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:09,075 INFO L82 PathProgramCache]: Analyzing trace with hash -369294790, now seen corresponding path program 1 times [2020-12-22 14:00:09,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:09,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230579355] [2020-12-22 14:00:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:09,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-12-22 14:00:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:09,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:00:09,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230579355] [2020-12-22 14:00:09,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:09,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:00:09,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735055563] [2020-12-22 14:00:09,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:00:09,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:09,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:00:09,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:00:09,898 INFO L87 Difference]: Start difference. First operand 100682 states and 125707 transitions. Second operand 4 states.