./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../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 --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c5e11c32abc44e06be1403f1da490e5e9ddc476b4dd1edb72148385c1e2a0b21 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:59:23,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:59:23,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:59:23,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:59:23,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:59:23,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:59:23,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:59:23,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:59:23,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:59:23,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:59:23,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:59:23,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:59:23,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:59:23,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:59:23,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:59:23,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:59:23,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:59:23,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:59:23,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:59:23,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:59:23,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:59:23,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:59:23,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:59:23,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:59:23,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:59:23,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:59:23,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:59:23,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:59:23,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:59:23,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:59:23,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:59:23,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:59:23,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:59:23,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:59:23,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:59:23,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:59:23,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:59:23,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:59:23,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:59:23,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:59:23,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:59:23,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:59:23,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:59:23,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:59:23,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:59:23,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:59:23,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:59:23,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:59:23,086 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:59:23,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:59:23,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:59:23,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:59:23,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:59:23,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:59:23,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:59:23,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:59:23,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:59:23,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:59:23,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:59:23,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:59:23,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:59:23,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:59:23,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:59:23,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:59:23,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:59:23,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:59:23,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:59:23,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:59:23,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:59:23,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:59:23,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:59:23,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e11c32abc44e06be1403f1da490e5e9ddc476b4dd1edb72148385c1e2a0b21 [2021-11-07 14:59:23,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:59:23,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:59:23,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:59:23,266 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:59:23,267 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:59:23,268 INFO L432 ainManager$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 [2021-11-07 14:59:23,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2547e101/44399013c7cb4b4599b911fa80d1d2d7/FLAG0c3347989 [2021-11-07 14:59:23,982 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:59:23,983 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 [2021-11-07 14:59:24,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2547e101/44399013c7cb4b4599b911fa80d1d2d7/FLAG0c3347989 [2021-11-07 14:59:24,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2547e101/44399013c7cb4b4599b911fa80d1d2d7 [2021-11-07 14:59:24,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:59:24,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:59:24,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:59:24,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:59:24,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:59:24,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:59:24" (1/1) ... [2021-11-07 14:59:24,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb5c131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:24, skipping insertion in model container [2021-11-07 14:59:24,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:59:24" (1/1) ... [2021-11-07 14:59:24,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:59:24,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:59:27,101 WARN L228 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] [2021-11-07 14:59:27,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:59:27,304 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:59:27,606 WARN L228 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] [2021-11-07 14:59:27,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:59:27,758 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:59:27,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27 WrapperNode [2021-11-07 14:59:27,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:59:27,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:59:27,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:59:27,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:59:27,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:27,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:30,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:59:30,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:59:30,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:59:30,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:59:30,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:30,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:31,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:31,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:33,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:33,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:33,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:34,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:59:34,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:59:34,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:59:34,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:59:34,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (1/1) ... [2021-11-07 14:59:34,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:59:34,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:59:34,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 14:59:34,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 14:59:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 14:59:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-07 14:59:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-07 14:59:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-07 14:59:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-07 14:59:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-07 14:59:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-07 14:59:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-07 14:59:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-07 14:59:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-07 14:59:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-07 14:59:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-07 14:59:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-07 14:59:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-07 14:59:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 14:59:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-07 14:59:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-07 14:59:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:59:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 14:59:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 14:59:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-07 14:59:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-07 14:59:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:59:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-07 14:59:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-07 14:59:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-07 14:59:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-07 14:59:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-07 14:59:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-07 14:59:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_19 [2021-11-07 14:59:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_19 [2021-11-07 14:59:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:59:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-07 14:59:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-07 14:59:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:59:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:59:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:59:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-07 14:59:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-07 14:59:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-07 14:59:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-07 14:59:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:59:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:59:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-07 14:59:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-07 14:59:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 14:59:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 14:59:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-07 14:59:34,711 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-07 14:59:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_18 [2021-11-07 14:59:34,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_18 [2021-11-07 14:59:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:59:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:59:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-07 14:59:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-07 14:59:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-07 14:59:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-07 14:59:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-07 14:59:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-07 14:59:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:59:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-07 14:59:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-07 14:59:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-07 14:59:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-07 14:59:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-07 14:59:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-07 14:59:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-07 14:59:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:59:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-07 14:59:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-07 14:59:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-07 14:59:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-07 14:59:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-07 14:59:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-07 14:59:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-07 14:59:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-07 14:59:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-07 14:59:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-07 14:59:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-07 14:59:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-07 14:59:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-07 14:59:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-07 14:59:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-07 14:59:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-07 14:59:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-07 14:59:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:59:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 15:00:27,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:00:27,394 INFO L299 CfgBuilder]: Removed 35706 assume(true) statements. [2021-11-07 15:00:27,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:00:27 BoogieIcfgContainer [2021-11-07 15:00:27,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:00:27,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:00:27,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:00:27,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:00:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:59:24" (1/3) ... [2021-11-07 15:00:27,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1303ea34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:00:27, skipping insertion in model container [2021-11-07 15:00:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:27" (2/3) ... [2021-11-07 15:00:27,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1303ea34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:00:27, skipping insertion in model container [2021-11-07 15:00:27,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:00:27" (3/3) ... [2021-11-07 15:00:27,419 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-07 15:00:27,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:00:27,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 15:00:27,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:00:27,529 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 15:00:27,530 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 15:00:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 25832 states, 25705 states have (on average 1.2941451079556507) internal successors, (33266), 25733 states have internal predecessors, (33266), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-07 15:00:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 15:00:27,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:27,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:27,773 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:00:27,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1542594832, now seen corresponding path program 1 times [2021-11-07 15:00:27,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:27,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022212699] [2021-11-07 15:00:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:27,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:28,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:28,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022212699] [2021-11-07 15:00:28,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022212699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:28,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:28,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:28,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368312434] [2021-11-07 15:00:28,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:28,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:00:28,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:28,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:00:28,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:00:28,309 INFO L87 Difference]: Start difference. First operand has 25832 states, 25705 states have (on average 1.2941451079556507) internal successors, (33266), 25733 states have internal predecessors, (33266), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:29,177 INFO L93 Difference]: Finished difference Result 51660 states and 66937 transitions. [2021-11-07 15:00:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:00:29,179 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 15:00:29,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:29,297 INFO L225 Difference]: With dead ends: 51660 [2021-11-07 15:00:29,298 INFO L226 Difference]: Without dead ends: 25211 [2021-11-07 15:00:29,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:00:29,419 INFO L933 BasicCegarLoop]: 32700 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32700 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:29,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32700 Invalid, 0 Unknown, 0 Unchecked, 64.46ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:00:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25211 states. [2021-11-07 15:00:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25211 to 25211. [2021-11-07 15:00:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25211 states, 25085 states have (on average 1.247677895156468) internal successors, (31298), 25112 states have internal predecessors, (31298), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-07 15:00:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25211 states to 25211 states and 31462 transitions. [2021-11-07 15:00:30,210 INFO L78 Accepts]: Start accepts. Automaton has 25211 states and 31462 transitions. Word has length 76 [2021-11-07 15:00:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:30,211 INFO L470 AbstractCegarLoop]: Abstraction has 25211 states and 31462 transitions. [2021-11-07 15:00:30,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 25211 states and 31462 transitions. [2021-11-07 15:00:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 15:00:30,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:30,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:30,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:00:30,215 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:00:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:30,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1874214110, now seen corresponding path program 1 times [2021-11-07 15:00:30,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:30,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717031935] [2021-11-07 15:00:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:30,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:30,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:30,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717031935] [2021-11-07 15:00:30,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717031935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:30,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:30,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:00:30,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400442555] [2021-11-07 15:00:30,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:30,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:30,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:30,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:30,487 INFO L87 Difference]: Start difference. First operand 25211 states and 31462 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:32,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:00:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:33,741 INFO L93 Difference]: Finished difference Result 75456 states and 94188 transitions. [2021-11-07 15:00:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:33,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 15:00:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:34,052 INFO L225 Difference]: With dead ends: 75456 [2021-11-07 15:00:34,052 INFO L226 Difference]: Without dead ends: 50310 [2021-11-07 15:00:34,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:34,107 INFO L933 BasicCegarLoop]: 31541 mSDtfsCounter, 31347 mSDsluCounter, 31431 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2080.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31347 SdHoareTripleChecker+Valid, 62972 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 86.52ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2198.54ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:34,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31347 Valid, 62972 Invalid, 15 Unknown, 0 Unchecked, 86.52ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2198.54ms Time] [2021-11-07 15:00:34,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50310 states. [2021-11-07 15:00:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50310 to 50296. [2021-11-07 15:00:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50296 states, 50055 states have (on average 1.2478473678953153) internal successors, (62461), 50099 states have internal predecessors, (62461), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-07 15:00:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50296 states to 50296 states and 62789 transitions. [2021-11-07 15:00:35,271 INFO L78 Accepts]: Start accepts. Automaton has 50296 states and 62789 transitions. Word has length 76 [2021-11-07 15:00:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:35,273 INFO L470 AbstractCegarLoop]: Abstraction has 50296 states and 62789 transitions. [2021-11-07 15:00:35,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 50296 states and 62789 transitions. [2021-11-07 15:00:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 15:00:35,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:35,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:35,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:00:35,279 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:00:35,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1774032917, now seen corresponding path program 1 times [2021-11-07 15:00:35,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:35,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294652059] [2021-11-07 15:00:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:35,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:35,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:35,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294652059] [2021-11-07 15:00:35,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294652059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:35,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:35,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:35,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088067859] [2021-11-07 15:00:35,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:35,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:35,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:35,544 INFO L87 Difference]: Start difference. First operand 50296 states and 62789 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:36,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:36,182 INFO L93 Difference]: Finished difference Result 50296 states and 62789 transitions. [2021-11-07 15:00:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:36,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 15:00:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:36,314 INFO L225 Difference]: With dead ends: 50296 [2021-11-07 15:00:36,315 INFO L226 Difference]: Without dead ends: 50294 [2021-11-07 15:00:36,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:36,342 INFO L933 BasicCegarLoop]: 31459 mSDtfsCounter, 31383 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31383 SdHoareTripleChecker+Valid, 31459 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.50ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:36,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31383 Valid, 31459 Invalid, 1 Unknown, 0 Unchecked, 30.10ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.50ms Time] [2021-11-07 15:00:36,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50294 states. [2021-11-07 15:00:37,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50294 to 50294. [2021-11-07 15:00:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50294 states, 50054 states have (on average 1.2478323410716425) internal successors, (62459), 50097 states have internal predecessors, (62459), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-07 15:00:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50294 states to 50294 states and 62787 transitions. [2021-11-07 15:00:37,565 INFO L78 Accepts]: Start accepts. Automaton has 50294 states and 62787 transitions. Word has length 79 [2021-11-07 15:00:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:37,566 INFO L470 AbstractCegarLoop]: Abstraction has 50294 states and 62787 transitions. [2021-11-07 15:00:37,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 50294 states and 62787 transitions. [2021-11-07 15:00:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 15:00:37,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:37,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:37,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:00:37,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:00:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash -839470353, now seen corresponding path program 1 times [2021-11-07 15:00:37,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:37,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101365917] [2021-11-07 15:00:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:37,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:37,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:37,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101365917] [2021-11-07 15:00:37,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101365917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:37,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:37,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:37,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104772358] [2021-11-07 15:00:37,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:37,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:37,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:37,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:37,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:37,798 INFO L87 Difference]: Start difference. First operand 50294 states and 62787 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:38,687 INFO L93 Difference]: Finished difference Result 50294 states and 62787 transitions. [2021-11-07 15:00:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:38,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 15:00:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:38,809 INFO L225 Difference]: With dead ends: 50294 [2021-11-07 15:00:38,809 INFO L226 Difference]: Without dead ends: 50292 [2021-11-07 15:00:38,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:38,834 INFO L933 BasicCegarLoop]: 31457 mSDtfsCounter, 31380 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31380 SdHoareTripleChecker+Valid, 31457 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.71ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:38,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31380 Valid, 31457 Invalid, 1 Unknown, 0 Unchecked, 32.76ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.71ms Time] [2021-11-07 15:00:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50292 states. [2021-11-07 15:00:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50292 to 50292. [2021-11-07 15:00:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50292 states, 50053 states have (on average 1.2478173136475337) internal successors, (62457), 50095 states have internal predecessors, (62457), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-07 15:00:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50292 states to 50292 states and 62785 transitions. [2021-11-07 15:00:40,010 INFO L78 Accepts]: Start accepts. Automaton has 50292 states and 62785 transitions. Word has length 80 [2021-11-07 15:00:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:40,010 INFO L470 AbstractCegarLoop]: Abstraction has 50292 states and 62785 transitions. [2021-11-07 15:00:40,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 50292 states and 62785 transitions. [2021-11-07 15:00:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 15:00:40,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:40,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:40,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:00:40,015 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:00:40,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:40,017 INFO L85 PathProgramCache]: Analyzing trace with hash -253693089, now seen corresponding path program 1 times [2021-11-07 15:00:40,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:40,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74182766] [2021-11-07 15:00:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:40,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:40,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:40,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74182766] [2021-11-07 15:00:40,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74182766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:40,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:40,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602462616] [2021-11-07 15:00:40,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:40,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:40,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:40,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:40,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:40,264 INFO L87 Difference]: Start difference. First operand 50292 states and 62785 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:41,270 INFO L93 Difference]: Finished difference Result 50292 states and 62785 transitions. [2021-11-07 15:00:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 15:00:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:41,388 INFO L225 Difference]: With dead ends: 50292 [2021-11-07 15:00:41,388 INFO L226 Difference]: Without dead ends: 50290 [2021-11-07 15:00:41,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:41,409 INFO L933 BasicCegarLoop]: 31455 mSDtfsCounter, 31377 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31377 SdHoareTripleChecker+Valid, 31455 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.36ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:41,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31377 Valid, 31455 Invalid, 1 Unknown, 0 Unchecked, 32.66ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.36ms Time] [2021-11-07 15:00:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50290 states. [2021-11-07 15:00:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50290 to 50290. [2021-11-07 15:00:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50290 states, 50052 states have (on average 1.247802285622952) internal successors, (62455), 50093 states have internal predecessors, (62455), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-07 15:00:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50290 states to 50290 states and 62783 transitions. [2021-11-07 15:00:42,670 INFO L78 Accepts]: Start accepts. Automaton has 50290 states and 62783 transitions. Word has length 81 [2021-11-07 15:00:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:42,671 INFO L470 AbstractCegarLoop]: Abstraction has 50290 states and 62783 transitions. [2021-11-07 15:00:42,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 50290 states and 62783 transitions. [2021-11-07 15:00:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 15:00:42,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:42,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:42,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:00:42,677 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:00:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash 725532921, now seen corresponding path program 1 times [2021-11-07 15:00:42,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:42,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202575623] [2021-11-07 15:00:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:42,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:42,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:42,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202575623] [2021-11-07 15:00:42,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202575623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:42,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:42,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:42,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845789376] [2021-11-07 15:00:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:42,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:42,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:42,890 INFO L87 Difference]: Start difference. First operand 50290 states and 62783 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:43,983 INFO L93 Difference]: Finished difference Result 50290 states and 62783 transitions. [2021-11-07 15:00:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:43,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 15:00:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:44,096 INFO L225 Difference]: With dead ends: 50290 [2021-11-07 15:00:44,096 INFO L226 Difference]: Without dead ends: 50276 [2021-11-07 15:00:44,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:44,114 INFO L933 BasicCegarLoop]: 31445 mSDtfsCounter, 31324 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31324 SdHoareTripleChecker+Valid, 31474 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.53ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.56ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:44,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31324 Valid, 31474 Invalid, 21 Unknown, 0 Unchecked, 33.53ms Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 22.56ms Time] [2021-11-07 15:00:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50276 states. [2021-11-07 15:00:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50276 to 50276. [2021-11-07 15:00:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50276 states, 50042 states have (on average 1.247691938771432) internal successors, (62437), 50079 states have internal predecessors, (62437), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-07 15:00:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50276 states to 50276 states and 62765 transitions. [2021-11-07 15:00:45,423 INFO L78 Accepts]: Start accepts. Automaton has 50276 states and 62765 transitions. Word has length 82 [2021-11-07 15:00:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:45,423 INFO L470 AbstractCegarLoop]: Abstraction has 50276 states and 62765 transitions. [2021-11-07 15:00:45,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 50276 states and 62765 transitions. [2021-11-07 15:00:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 15:00:45,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:45,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:45,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 15:00:45,430 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:00:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash 534271900, now seen corresponding path program 1 times [2021-11-07 15:00:45,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:45,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455445549] [2021-11-07 15:00:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:45,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:45,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:45,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455445549] [2021-11-07 15:00:45,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455445549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:45,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:45,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:00:45,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791244103] [2021-11-07 15:00:45,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:45,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:45,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:45,806 INFO L87 Difference]: Start difference. First operand 50276 states and 62765 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:47,784 INFO L93 Difference]: Finished difference Result 114428 states and 142994 transitions. [2021-11-07 15:00:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:47,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-07 15:00:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:47,958 INFO L225 Difference]: With dead ends: 114428 [2021-11-07 15:00:47,958 INFO L226 Difference]: Without dead ends: 64217 [2021-11-07 15:00:48,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:48,077 INFO L933 BasicCegarLoop]: 34581 mSDtfsCounter, 8852 mSDsluCounter, 31236 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 230.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8852 SdHoareTripleChecker+Valid, 65817 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.79ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 292.96ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:48,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8852 Valid, 65817 Invalid, 134 Unknown, 0 Unchecked, 45.79ms Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 292.96ms Time] [2021-11-07 15:00:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64217 states. [2021-11-07 15:00:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64217 to 64202. [2021-11-07 15:00:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64202 states, 63778 states have (on average 1.2497883282636646) internal successors, (79709), 63849 states have internal predecessors, (79709), 288 states have call successors, (288), 132 states have call predecessors, (288), 132 states have return successors, (288), 264 states have call predecessors, (288), 288 states have call successors, (288) [2021-11-07 15:00:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64202 states to 64202 states and 80285 transitions. [2021-11-07 15:00:49,856 INFO L78 Accepts]: Start accepts. Automaton has 64202 states and 80285 transitions. Word has length 102 [2021-11-07 15:00:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:49,857 INFO L470 AbstractCegarLoop]: Abstraction has 64202 states and 80285 transitions. [2021-11-07 15:00:49,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 64202 states and 80285 transitions. [2021-11-07 15:00:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 15:00:49,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:49,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:49,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 15:00:49,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:00:49,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1733339836, now seen corresponding path program 1 times [2021-11-07 15:00:49,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:49,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924161775] [2021-11-07 15:00:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:49,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:50,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:50,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924161775] [2021-11-07 15:00:50,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924161775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:50,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:50,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:00:50,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793012948] [2021-11-07 15:00:50,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:50,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:50,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:50,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:50,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:50,120 INFO L87 Difference]: Start difference. First operand 64202 states and 80285 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:52,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:00:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:53,453 INFO L93 Difference]: Finished difference Result 64202 states and 80285 transitions. [2021-11-07 15:00:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:53,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 15:00:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:53,454 INFO L225 Difference]: With dead ends: 64202 [2021-11-07 15:00:53,454 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 15:00:53,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:53,678 INFO L933 BasicCegarLoop]: 31429 mSDtfsCounter, 26 mSDsluCounter, 31393 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2062.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 62822 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.59ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2229.55ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:53,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 62822 Invalid, 17 Unknown, 0 Unchecked, 34.59ms Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2229.55ms Time] [2021-11-07 15:00:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 15:00:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 15:00:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 15:00:53,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2021-11-07 15:00:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:53,679 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 15:00:53,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 15:00:53,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 15:00:53,681 INFO L764 garLoopResultBuilder]: Registering result SAFE for location dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-11-07 15:00:53,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-11-07 15:00:53,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-11-07 15:00:53,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-11-07 15:00:53,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-11-07 15:00:53,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-11-07 15:00:53,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-11-07 15:00:53,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-11-07 15:00:53,683 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-11-07 15:00:53,683 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-11-07 15:00:53,683 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-11-07 15:00:53,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 15:00:53,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.