/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-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:22:24,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:22:24,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:22:24,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:22:24,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:22:24,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:22:24,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:22:24,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:22:24,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:22:24,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:22:24,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:22:24,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:22:24,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:22:24,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:22:24,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:22:24,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:22:24,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:22:24,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:22:24,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:22:24,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:22:24,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:22:24,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:22:24,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:22:24,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:22:24,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:22:24,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:22:24,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:22:24,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:22:24,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:22:24,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:22:24,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:22:24,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:22:24,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:22:24,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:22:24,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:22:24,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:22:24,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:22:24,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:22:24,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:22:24,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:22:24,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:22:24,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:22:24,194 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:22:24,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:22:24,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:22:24,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:22:24,200 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:22:24,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:22:24,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:22:24,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:22:24,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:22:24,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:22:24,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:22:24,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:22:24,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:22:24,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:22:24,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:22:24,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:22:24,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:22:24,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:22:24,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:22:24,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:22:24,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:22:24,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:22:24,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:22:24,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:22:24,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:22:24,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:22:24,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:22:24,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:22:24,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:22:24,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:22:24,721 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:22:24,722 INFO L432 ainManager$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-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2020-12-22 14:22:24,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/361c55822/b2c531fb7a114e1595a80e30bf23bea4/FLAG4f21113fc [2020-12-22 14:22:26,158 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:22:26,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2020-12-22 14:22:26,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/361c55822/b2c531fb7a114e1595a80e30bf23bea4/FLAG4f21113fc [2020-12-22 14:22:26,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/361c55822/b2c531fb7a114e1595a80e30bf23bea4 [2020-12-22 14:22:26,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:22:26,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:22:26,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:22:26,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:22:26,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:22:26,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:22:26" (1/1) ... [2020-12-22 14:22:26,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f26d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:26, skipping insertion in model container [2020-12-22 14:22:26,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:22:26" (1/1) ... [2020-12-22 14:22:26,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:22:26,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:22:31,705 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-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i[382358,382371] [2020-12-22 14:22:32,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:22:32,088 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:22:32,686 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-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i[382358,382371] [2020-12-22 14:22:32,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:22:34,193 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:22:34,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34 WrapperNode [2020-12-22 14:22:34,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:22:34,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:22:34,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:22:34,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:22:34,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:34,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:40,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:22:40,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:22:40,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:22:40,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:22:40,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:40,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:42,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:42,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:45,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:46,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:46,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (1/1) ... [2020-12-22 14:22:47,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:22:47,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:22:47,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:22:47,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:22:47,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (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 14:22:47,816 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-12-22 14:22:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2020-12-22 14:22:47,817 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2020-12-22 14:22:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2020-12-22 14:22:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2020-12-22 14:22:47,819 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2020-12-22 14:22:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2020-12-22 14:22:47,820 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2020-12-22 14:22:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2020-12-22 14:22:47,821 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2020-12-22 14:22:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2020-12-22 14:22:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2020-12-22 14:22:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2020-12-22 14:22:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2020-12-22 14:22:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 14:22:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2020-12-22 14:22:47,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2020-12-22 14:22:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:22:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:22:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:22:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2020-12-22 14:22:47,823 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2020-12-22 14:22:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:22:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2020-12-22 14:22:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2020-12-22 14:22:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2020-12-22 14:22:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2020-12-22 14:22:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2020-12-22 14:22:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2020-12-22 14:22:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_19 [2020-12-22 14:22:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_19 [2020-12-22 14:22:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:22:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2020-12-22 14:22:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2020-12-22 14:22:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:22:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 14:22:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 14:22:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2020-12-22 14:22:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2020-12-22 14:22:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2020-12-22 14:22:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2020-12-22 14:22:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:22:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:22:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2020-12-22 14:22:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2020-12-22 14:22:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:22:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:22:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2020-12-22 14:22:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2020-12-22 14:22:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_18 [2020-12-22 14:22:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_18 [2020-12-22 14:22:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:22:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:22:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2020-12-22 14:22:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2020-12-22 14:22:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2020-12-22 14:22:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2020-12-22 14:22:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2020-12-22 14:22:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2020-12-22 14:22:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:22:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2020-12-22 14:22:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2020-12-22 14:22:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2020-12-22 14:22:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2020-12-22 14:22:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2020-12-22 14:22:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2020-12-22 14:22:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2020-12-22 14:22:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:22:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2020-12-22 14:22:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2020-12-22 14:22:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2020-12-22 14:22:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2020-12-22 14:22:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2020-12-22 14:22:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2020-12-22 14:22:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2020-12-22 14:22:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2020-12-22 14:22:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2020-12-22 14:22:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2020-12-22 14:22:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2020-12-22 14:22:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2020-12-22 14:22:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2020-12-22 14:22:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2020-12-22 14:22:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2020-12-22 14:22:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2020-12-22 14:22:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2020-12-22 14:22:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:22:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-12-22 14:24:33,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:24:33,095 INFO L299 CfgBuilder]: Removed 35706 assume(true) statements. [2020-12-22 14:24:33,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:24:33 BoogieIcfgContainer [2020-12-22 14:24:33,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:24:33,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:24:33,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:24:33,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:24:33,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:22:26" (1/3) ... [2020-12-22 14:24:33,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f8d8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:24:33, skipping insertion in model container [2020-12-22 14:24:33,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:34" (2/3) ... [2020-12-22 14:24:33,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f8d8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:24:33, skipping insertion in model container [2020-12-22 14:24:33,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:24:33" (3/3) ... [2020-12-22 14:24:33,130 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2020-12-22 14:24:33,137 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:24:33,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 14:24:33,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 14:24:33,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:24:33,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:24:33,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:24:33,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:24:33,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:24:33,266 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:24:33,266 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:24:33,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:24:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 25832 states. [2020-12-22 14:24:33,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 14:24:33,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:33,559 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 14:24:33,559 INFO L429 AbstractCegarLoop]: === Iteration 1 === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:33,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1542594832, now seen corresponding path program 1 times [2020-12-22 14:24:33,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:33,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107785371] [2020-12-22 14:24:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:34,510 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 14:24:34,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107785371] [2020-12-22 14:24:34,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:34,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:24:34,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804316859] [2020-12-22 14:24:34,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:24:34,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:34,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:24:34,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:24:34,536 INFO L87 Difference]: Start difference. First operand 25832 states. Second operand 2 states. [2020-12-22 14:24:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:35,942 INFO L93 Difference]: Finished difference Result 51660 states and 66937 transitions. [2020-12-22 14:24:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:24:35,949 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 76 [2020-12-22 14:24:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:36,129 INFO L225 Difference]: With dead ends: 51660 [2020-12-22 14:24:36,129 INFO L226 Difference]: Without dead ends: 25211 [2020-12-22 14:24:36,272 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 14:24:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25211 states. [2020-12-22 14:24:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25211 to 25211. [2020-12-22 14:24:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25211 states. [2020-12-22 14:24:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25211 states to 25211 states and 31461 transitions. [2020-12-22 14:24:37,464 INFO L78 Accepts]: Start accepts. Automaton has 25211 states and 31461 transitions. Word has length 76 [2020-12-22 14:24:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:24:37,465 INFO L481 AbstractCegarLoop]: Abstraction has 25211 states and 31461 transitions. [2020-12-22 14:24:37,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:24:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 25211 states and 31461 transitions. [2020-12-22 14:24:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 14:24:37,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:37,478 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 14:24:37,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:24:37,479 INFO L429 AbstractCegarLoop]: === Iteration 2 === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1874214110, now seen corresponding path program 1 times [2020-12-22 14:24:37,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:37,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348203413] [2020-12-22 14:24:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:38,274 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 14:24:38,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348203413] [2020-12-22 14:24:38,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:38,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:24:38,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566806387] [2020-12-22 14:24:38,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:24:38,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:38,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:24:38,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:24:38,281 INFO L87 Difference]: Start difference. First operand 25211 states and 31461 transitions. Second operand 3 states. [2020-12-22 14:24:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:42,214 INFO L93 Difference]: Finished difference Result 75456 states and 94185 transitions. [2020-12-22 14:24:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:24:42,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 14:24:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:42,656 INFO L225 Difference]: With dead ends: 75456 [2020-12-22 14:24:42,656 INFO L226 Difference]: Without dead ends: 50310 [2020-12-22 14:24:42,713 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 14:24:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50310 states. [2020-12-22 14:24:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50310 to 50296. [2020-12-22 14:24:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50296 states. [2020-12-22 14:24:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50296 states to 50296 states and 62787 transitions. [2020-12-22 14:24:44,494 INFO L78 Accepts]: Start accepts. Automaton has 50296 states and 62787 transitions. Word has length 76 [2020-12-22 14:24:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:24:44,495 INFO L481 AbstractCegarLoop]: Abstraction has 50296 states and 62787 transitions. [2020-12-22 14:24:44,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:24:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 50296 states and 62787 transitions. [2020-12-22 14:24:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 14:24:44,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:44,498 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 14:24:44,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:24:44,499 INFO L429 AbstractCegarLoop]: === Iteration 3 === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:44,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1774032917, now seen corresponding path program 1 times [2020-12-22 14:24:44,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:44,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473098383] [2020-12-22 14:24:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:44,955 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 14:24:44,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473098383] [2020-12-22 14:24:44,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:44,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:24:44,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563462394] [2020-12-22 14:24:44,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:24:44,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:44,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:24:44,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:24:44,959 INFO L87 Difference]: Start difference. First operand 50296 states and 62787 transitions. Second operand 3 states. [2020-12-22 14:24:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:46,314 INFO L93 Difference]: Finished difference Result 50296 states and 62787 transitions. [2020-12-22 14:24:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:24:46,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 14:24:46,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:46,476 INFO L225 Difference]: With dead ends: 50296 [2020-12-22 14:24:46,477 INFO L226 Difference]: Without dead ends: 50294 [2020-12-22 14:24:46,493 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 14:24:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50294 states. [2020-12-22 14:24:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50294 to 50294. [2020-12-22 14:24:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50294 states. [2020-12-22 14:24:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50294 states to 50294 states and 62785 transitions. [2020-12-22 14:24:48,233 INFO L78 Accepts]: Start accepts. Automaton has 50294 states and 62785 transitions. Word has length 79 [2020-12-22 14:24:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:24:48,236 INFO L481 AbstractCegarLoop]: Abstraction has 50294 states and 62785 transitions. [2020-12-22 14:24:48,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:24:48,237 INFO L276 IsEmpty]: Start isEmpty. Operand 50294 states and 62785 transitions. [2020-12-22 14:24:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 14:24:48,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:48,240 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] [2020-12-22 14:24:48,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:24:48,241 INFO L429 AbstractCegarLoop]: === Iteration 4 === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash -839470353, now seen corresponding path program 1 times [2020-12-22 14:24:48,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:48,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59893612] [2020-12-22 14:24:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:48,894 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 14:24:48,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59893612] [2020-12-22 14:24:48,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:48,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:24:48,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056564638] [2020-12-22 14:24:48,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:24:48,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:48,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:24:48,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:24:48,905 INFO L87 Difference]: Start difference. First operand 50294 states and 62785 transitions. Second operand 3 states. [2020-12-22 14:24:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:50,451 INFO L93 Difference]: Finished difference Result 50294 states and 62785 transitions. [2020-12-22 14:24:50,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:24:50,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 14:24:50,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:50,583 INFO L225 Difference]: With dead ends: 50294 [2020-12-22 14:24:50,584 INFO L226 Difference]: Without dead ends: 50292 [2020-12-22 14:24:50,600 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 14:24:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50292 states. [2020-12-22 14:24:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50292 to 50292. [2020-12-22 14:24:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50292 states. [2020-12-22 14:24:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50292 states to 50292 states and 62783 transitions. [2020-12-22 14:24:52,404 INFO L78 Accepts]: Start accepts. Automaton has 50292 states and 62783 transitions. Word has length 80 [2020-12-22 14:24:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:24:52,404 INFO L481 AbstractCegarLoop]: Abstraction has 50292 states and 62783 transitions. [2020-12-22 14:24:52,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:24:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 50292 states and 62783 transitions. [2020-12-22 14:24:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 14:24:52,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:52,407 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] [2020-12-22 14:24:52,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:24:52,408 INFO L429 AbstractCegarLoop]: === Iteration 5 === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:52,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:52,409 INFO L82 PathProgramCache]: Analyzing trace with hash -253693089, now seen corresponding path program 1 times [2020-12-22 14:24:52,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:52,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275585687] [2020-12-22 14:24:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:52,975 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 14:24:52,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275585687] [2020-12-22 14:24:52,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:52,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:24:52,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739379356] [2020-12-22 14:24:52,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:24:52,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:24:52,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:24:52,978 INFO L87 Difference]: Start difference. First operand 50292 states and 62783 transitions. Second operand 3 states. [2020-12-22 14:24:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:54,621 INFO L93 Difference]: Finished difference Result 50292 states and 62783 transitions. [2020-12-22 14:24:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:24:54,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 14:24:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:54,738 INFO L225 Difference]: With dead ends: 50292 [2020-12-22 14:24:54,738 INFO L226 Difference]: Without dead ends: 50290 [2020-12-22 14:24:54,752 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 14:24:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50290 states. [2020-12-22 14:24:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50290 to 50290. [2020-12-22 14:24:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50290 states. [2020-12-22 14:24:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50290 states to 50290 states and 62781 transitions. [2020-12-22 14:24:56,606 INFO L78 Accepts]: Start accepts. Automaton has 50290 states and 62781 transitions. Word has length 81 [2020-12-22 14:24:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:24:56,607 INFO L481 AbstractCegarLoop]: Abstraction has 50290 states and 62781 transitions. [2020-12-22 14:24:56,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:24:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 50290 states and 62781 transitions. [2020-12-22 14:24:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 14:24:56,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:56,609 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] [2020-12-22 14:24:56,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:24:56,610 INFO L429 AbstractCegarLoop]: === Iteration 6 === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:56,613 INFO L82 PathProgramCache]: Analyzing trace with hash 725532921, now seen corresponding path program 1 times [2020-12-22 14:24:56,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:56,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054656230] [2020-12-22 14:24:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:56,950 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 14:24:56,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054656230] [2020-12-22 14:24:56,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:56,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:24:56,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914692373] [2020-12-22 14:24:56,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:24:56,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:56,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:24:56,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:24:56,953 INFO L87 Difference]: Start difference. First operand 50290 states and 62781 transitions. Second operand 3 states. [2020-12-22 14:24:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:58,288 INFO L93 Difference]: Finished difference Result 50290 states and 62781 transitions. [2020-12-22 14:24:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:24:58,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 14:24:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:58,406 INFO L225 Difference]: With dead ends: 50290 [2020-12-22 14:24:58,406 INFO L226 Difference]: Without dead ends: 50276 [2020-12-22 14:24:58,423 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 14:24:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50276 states. [2020-12-22 14:25:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50276 to 50276. [2020-12-22 14:25:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50276 states. [2020-12-22 14:25:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50276 states to 50276 states and 62763 transitions. [2020-12-22 14:25:00,230 INFO L78 Accepts]: Start accepts. Automaton has 50276 states and 62763 transitions. Word has length 82 [2020-12-22 14:25:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:25:00,230 INFO L481 AbstractCegarLoop]: Abstraction has 50276 states and 62763 transitions. [2020-12-22 14:25:00,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:25:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 50276 states and 62763 transitions. [2020-12-22 14:25:00,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 14:25:00,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:25:00,238 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] [2020-12-22 14:25:00,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:25:00,238 INFO L429 AbstractCegarLoop]: === Iteration 7 === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:25:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:25:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash 534271900, now seen corresponding path program 1 times [2020-12-22 14:25:00,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:25:00,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393836930] [2020-12-22 14:25:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:25:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:25:00,550 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 14:25:00,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393836930] [2020-12-22 14:25:00,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:25:00,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:25:00,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816345598] [2020-12-22 14:25:00,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:25:00,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:25:00,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:25:00,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:25:00,553 INFO L87 Difference]: Start difference. First operand 50276 states and 62763 transitions. Second operand 3 states. [2020-12-22 14:25:03,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:25:03,656 INFO L93 Difference]: Finished difference Result 114428 states and 142990 transitions. [2020-12-22 14:25:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:25:03,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-22 14:25:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:25:03,834 INFO L225 Difference]: With dead ends: 114428 [2020-12-22 14:25:03,834 INFO L226 Difference]: Without dead ends: 64217 [2020-12-22 14:25:03,938 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 14:25:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64217 states. [2020-12-22 14:25:06,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64217 to 64202. [2020-12-22 14:25:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64202 states. [2020-12-22 14:25:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64202 states to 64202 states and 80283 transitions. [2020-12-22 14:25:06,445 INFO L78 Accepts]: Start accepts. Automaton has 64202 states and 80283 transitions. Word has length 102 [2020-12-22 14:25:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:25:06,446 INFO L481 AbstractCegarLoop]: Abstraction has 64202 states and 80283 transitions. [2020-12-22 14:25:06,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:25:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 64202 states and 80283 transitions. [2020-12-22 14:25:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-12-22 14:25:06,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:25:06,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:25:06,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:25:06,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:25:06,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:25:06,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1733339836, now seen corresponding path program 1 times [2020-12-22 14:25:06,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:25:06,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101067869] [2020-12-22 14:25:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:25:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:25:06,896 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 14:25:06,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101067869] [2020-12-22 14:25:06,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:25:06,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:25:06,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078837374] [2020-12-22 14:25:06,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:25:06,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:25:06,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:25:06,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:25:06,903 INFO L87 Difference]: Start difference. First operand 64202 states and 80283 transitions. Second operand 3 states. [2020-12-22 14:25:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:25:10,692 INFO L93 Difference]: Finished difference Result 64202 states and 80283 transitions. [2020-12-22 14:25:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:25:10,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-12-22 14:25:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:25:10,694 INFO L225 Difference]: With dead ends: 64202 [2020-12-22 14:25:10,694 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 14:25:10,830 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 14:25:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 14:25:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 14:25:10,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 14:25:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 14:25:10,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2020-12-22 14:25:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:25:10,834 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 14:25:10,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:25:10,835 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 14:25:10,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 14:25:10,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:25:10,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 14:25:11,601 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 1