./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 4d014703 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-4d01470 [2021-11-02 21:07:59,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 21:07:59,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 21:07:59,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 21:07:59,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 21:07:59,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 21:07:59,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 21:07:59,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 21:07:59,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 21:07:59,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 21:07:59,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 21:07:59,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 21:07:59,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 21:07:59,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 21:07:59,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 21:07:59,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 21:07:59,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 21:07:59,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 21:07:59,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 21:07:59,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 21:07:59,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 21:07:59,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 21:07:59,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 21:07:59,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 21:07:59,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 21:07:59,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 21:07:59,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 21:07:59,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 21:07:59,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 21:07:59,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 21:07:59,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 21:07:59,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 21:07:59,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 21:07:59,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 21:07:59,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 21:07:59,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 21:07:59,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 21:07:59,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 21:07:59,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 21:07:59,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 21:07:59,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 21:07:59,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 21:07:59,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 21:07:59,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 21:07:59,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 21:07:59,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 21:07:59,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 21:07:59,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 21:07:59,160 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 21:07:59,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 21:07:59,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 21:07:59,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 21:07:59,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 21:07:59,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 21:07:59,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 21:07:59,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 21:07:59,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 21:07:59,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 21:07:59,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 21:07:59,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 21:07:59,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 21:07:59,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:07:59,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 21:07:59,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 21:07:59,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 21:07:59,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 21:07:59,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 21:07:59,164 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 21:07:59,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 21:07:59,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 21:07:59,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 21:07:59,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e11c32abc44e06be1403f1da490e5e9ddc476b4dd1edb72148385c1e2a0b21 [2021-11-02 21:07:59,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 21:07:59,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 21:07:59,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 21:07:59,377 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 21:07:59,377 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 21:07:59,379 INFO L432 ainManager$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 [2021-11-02 21:07:59,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c346d3279/37eaabd9f21c43a19991d70c7129d94a/FLAGba9726f78 [2021-11-02 21:08:00,078 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 21:08:00,079 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 [2021-11-02 21:08:00,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c346d3279/37eaabd9f21c43a19991d70c7129d94a/FLAGba9726f78 [2021-11-02 21:08:00,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c346d3279/37eaabd9f21c43a19991d70c7129d94a [2021-11-02 21:08:00,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 21:08:00,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 21:08:00,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 21:08:00,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 21:08:00,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 21:08:00,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:00" (1/1) ... [2021-11-02 21:08:00,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db3f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:00, skipping insertion in model container [2021-11-02 21:08:00,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:00" (1/1) ... [2021-11-02 21:08:00,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 21:08:00,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 21:08:03,313 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] [2021-11-02 21:08:03,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:08:03,499 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 21:08:03,826 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] [2021-11-02 21:08:03,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:08:03,994 INFO L208 MainTranslator]: Completed translation [2021-11-02 21:08:03,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03 WrapperNode [2021-11-02 21:08:03,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 21:08:03,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 21:08:03,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 21:08:03,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 21:08:04,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:04,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:07,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 21:08:07,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 21:08:07,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 21:08:07,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 21:08:07,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:07,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:08,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:08,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:10,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:10,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:10,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:11,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 21:08:11,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 21:08:11,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 21:08:11,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 21:08:11,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (1/1) ... [2021-11-02 21:08:11,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:08:11,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:08:11,784 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) [2021-11-02 21:08:11,787 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 [2021-11-02 21:08:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 21:08:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-02 21:08:11,822 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-02 21:08:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-02 21:08:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-02 21:08:11,823 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-02 21:08:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-02 21:08:11,823 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-02 21:08:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-02 21:08:11,824 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-02 21:08:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-02 21:08:11,824 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-02 21:08:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-02 21:08:11,827 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-02 21:08:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 21:08:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-02 21:08:11,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-02 21:08:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 21:08:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 21:08:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 21:08:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-02 21:08:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-02 21:08:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 21:08:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-02 21:08:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-02 21:08:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-02 21:08:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-02 21:08:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-02 21:08:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-02 21:08:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_19 [2021-11-02 21:08:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_19 [2021-11-02 21:08:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 21:08:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-02 21:08:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-02 21:08:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 21:08:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 21:08:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 21:08:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-02 21:08:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-02 21:08:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-02 21:08:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-02 21:08:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 21:08:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 21:08:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-02 21:08:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-02 21:08:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 21:08:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 21:08:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-02 21:08:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-02 21:08:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_18 [2021-11-02 21:08:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_18 [2021-11-02 21:08:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 21:08:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 21:08:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-02 21:08:11,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-02 21:08:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-02 21:08:11,832 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-02 21:08:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-02 21:08:11,832 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-02 21:08:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 21:08:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-02 21:08:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-02 21:08:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-02 21:08:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-02 21:08:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-02 21:08:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-02 21:08:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-02 21:08:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 21:08:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-02 21:08:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-02 21:08:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-02 21:08:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-02 21:08:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-02 21:08:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-02 21:08:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-02 21:08:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-02 21:08:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-02 21:08:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-02 21:08:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-02 21:08:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-02 21:08:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-02 21:08:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-02 21:08:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-02 21:08:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-02 21:08:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-02 21:08:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 21:08:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 21:08:25,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 21:08:25,143 INFO L299 CfgBuilder]: Removed 35706 assume(true) statements. [2021-11-02 21:08:25,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:25 BoogieIcfgContainer [2021-11-02 21:08:25,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 21:08:25,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 21:08:25,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 21:08:25,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 21:08:25,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:08:00" (1/3) ... [2021-11-02 21:08:25,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368843b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:25, skipping insertion in model container [2021-11-02 21:08:25,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:03" (2/3) ... [2021-11-02 21:08:25,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368843b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:25, skipping insertion in model container [2021-11-02 21:08:25,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:25" (3/3) ... [2021-11-02 21:08:25,171 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-02 21:08:25,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 21:08:25,177 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 21:08:25,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 21:08:25,274 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 [2021-11-02 21:08:25,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 21:08:25,523 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) [2021-11-02 21:08:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 21:08:25,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:08:25,531 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] [2021-11-02 21:08:25,531 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)] === [2021-11-02 21:08:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:08:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1542594832, now seen corresponding path program 1 times [2021-11-02 21:08:25,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:08:25,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930507829] [2021-11-02 21:08:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:08:25,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:08:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:08:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:08:26,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:08:26,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930507829] [2021-11-02 21:08:26,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930507829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:08:26,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:08:26,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:08:26,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978395830] [2021-11-02 21:08:26,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 21:08:26,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:08:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 21:08:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:08:26,196 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) [2021-11-02 21:09:23,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:09:26,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:09:32,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:10:03,597 INFO L93 Difference]: Finished difference Result 51660 states and 66937 transitions. [2021-11-02 21:10:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 21:10:03,599 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 [2021-11-02 21:10:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:10:03,709 INFO L225 Difference]: With dead ends: 51660 [2021-11-02 21:10:03,709 INFO L226 Difference]: Without dead ends: 25211 [2021-11-02 21:10:03,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:10:03,908 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31918 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84570.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 31919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 110.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31918 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94981.30ms IncrementalHoareTripleChecker+Time [2021-11-02 21:10:03,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 781 Invalid, 31919 Unknown, 0 Unchecked, 110.63ms Time], IncrementalHoareTripleChecker [0 Valid, 31918 Invalid, 1 Unknown, 0 Unchecked, 94981.30ms Time] [2021-11-02 21:10:03,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25211 states. [2021-11-02 21:10:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25211 to 25211. [2021-11-02 21:10:04,497 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) [2021-11-02 21:10:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25211 states to 25211 states and 31462 transitions. [2021-11-02 21:10:04,584 INFO L78 Accepts]: Start accepts. Automaton has 25211 states and 31462 transitions. Word has length 76 [2021-11-02 21:10:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:10:04,585 INFO L470 AbstractCegarLoop]: Abstraction has 25211 states and 31462 transitions. [2021-11-02 21:10:04,586 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) [2021-11-02 21:10:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 25211 states and 31462 transitions. [2021-11-02 21:10:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 21:10:04,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:10:04,594 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] [2021-11-02 21:10:04,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 21:10:04,594 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)] === [2021-11-02 21:10:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:10:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1874214110, now seen corresponding path program 1 times [2021-11-02 21:10:04,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:10:04,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140659101] [2021-11-02 21:10:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:10:04,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:10:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:10:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:10:04,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:10:04,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140659101] [2021-11-02 21:10:04,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140659101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:10:04,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:10:04,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:10:04,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679870873] [2021-11-02 21:10:04,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:10:04,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:10:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:10:04,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:10:04,936 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) [2021-11-02 21:10:06,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:08,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:31,867 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:10:41,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:11:58,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:04,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:06,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:12,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:12:19,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:13:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:13:15,610 INFO L93 Difference]: Finished difference Result 50389 states and 62897 transitions. [2021-11-02 21:13:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:13:15,611 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 [2021-11-02 21:13:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:13:15,698 INFO L225 Difference]: With dead ends: 50389 [2021-11-02 21:13:15,699 INFO L226 Difference]: Without dead ends: 25218 [2021-11-02 21:13:15,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:15,747 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 31423 mSDsCounter, 0 mSdLazyCounter, 62586 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168607.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 62601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 292.09ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62586 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188165.25ms IncrementalHoareTripleChecker+Time [2021-11-02 21:13:15,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 62601 Unknown, 0 Unchecked, 292.09ms Time], IncrementalHoareTripleChecker [12 Valid, 62586 Invalid, 3 Unknown, 0 Unchecked, 188165.25ms Time] [2021-11-02 21:13:15,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25218 states. [2021-11-02 21:13:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25218 to 25218. [2021-11-02 21:13:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25218 states, 25092 states have (on average 1.247608799617408) internal successors, (31305), 25119 states have internal predecessors, (31305), 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) [2021-11-02 21:13:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25218 states to 25218 states and 31469 transitions. [2021-11-02 21:13:16,359 INFO L78 Accepts]: Start accepts. Automaton has 25218 states and 31469 transitions. Word has length 76 [2021-11-02 21:13:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:13:16,360 INFO L470 AbstractCegarLoop]: Abstraction has 25218 states and 31469 transitions. [2021-11-02 21:13:16,360 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) [2021-11-02 21:13:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 25218 states and 31469 transitions. [2021-11-02 21:13:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 21:13:16,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:13:16,362 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] [2021-11-02 21:13:16,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 21:13:16,362 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)] === [2021-11-02 21:13:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:13:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash -534836220, now seen corresponding path program 1 times [2021-11-02 21:13:16,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:13:16,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503517130] [2021-11-02 21:13:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:13:16,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:13:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:13:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 21:13:16,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:13:16,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503517130] [2021-11-02 21:13:16,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503517130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:13:16,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:13:16,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:13:16,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778844799] [2021-11-02 21:13:16,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:13:16,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:13:16,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:13:16,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:13:16,581 INFO L87 Difference]: Start difference. First operand 25218 states and 31469 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-02 21:13:19,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:09,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:10,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:25,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:15:43,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:31,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:16:31,371 INFO L93 Difference]: Finished difference Result 50383 states and 62883 transitions. [2021-11-02 21:16:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:16:31,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-02 21:16:31,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:16:31,429 INFO L225 Difference]: With dead ends: 50383 [2021-11-02 21:16:31,429 INFO L226 Difference]: Without dead ends: 25221 [2021-11-02 21:16:31,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:31,479 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 31422 mSDsCounter, 0 mSdLazyCounter, 62590 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166802.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 62596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 256.36ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62590 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192614.85ms IncrementalHoareTripleChecker+Time [2021-11-02 21:16:31,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 62596 Unknown, 0 Unchecked, 256.36ms Time], IncrementalHoareTripleChecker [4 Valid, 62590 Invalid, 2 Unknown, 0 Unchecked, 192614.85ms Time] [2021-11-02 21:16:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25221 states. [2021-11-02 21:16:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25221 to 25221. [2021-11-02 21:16:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25221 states, 25095 states have (on average 1.2475791990436342) internal successors, (31308), 25122 states have internal predecessors, (31308), 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) [2021-11-02 21:16:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25221 states to 25221 states and 31472 transitions. [2021-11-02 21:16:31,888 INFO L78 Accepts]: Start accepts. Automaton has 25221 states and 31472 transitions. Word has length 83 [2021-11-02 21:16:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:16:31,890 INFO L470 AbstractCegarLoop]: Abstraction has 25221 states and 31472 transitions. [2021-11-02 21:16:31,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-02 21:16:31,892 INFO L276 IsEmpty]: Start isEmpty. Operand 25221 states and 31472 transitions. [2021-11-02 21:16:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 21:16:31,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:16:31,895 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] [2021-11-02 21:16:31,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 21:16:31,896 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:16:31,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:16:31,896 INFO L85 PathProgramCache]: Analyzing trace with hash 785484330, now seen corresponding path program 1 times [2021-11-02 21:16:31,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:16:31,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197547544] [2021-11-02 21:16:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:16:31,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:16:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:16:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:16:32,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:16:32,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197547544] [2021-11-02 21:16:32,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197547544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:16:32,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:16:32,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:16:32,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674003920] [2021-11-02 21:16:32,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:16:32,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:16:32,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:16:32,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:16:32,250 INFO L87 Difference]: Start difference. First operand 25221 states and 31472 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-02 21:16:33,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:16:34,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:36,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:46,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:18:59,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:19:56,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:20:01,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:21:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:21:11,991 INFO L93 Difference]: Finished difference Result 75470 states and 94202 transitions. [2021-11-02 21:21:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:21:11,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-02 21:21:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:21:12,104 INFO L225 Difference]: With dead ends: 75470 [2021-11-02 21:21:12,105 INFO L226 Difference]: Without dead ends: 50322 [2021-11-02 21:21:12,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:21:12,154 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 31347 mSDsluCounter, 31431 mSDsCounter, 0 mSdLazyCounter, 62573 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 226715.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31347 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 62577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 288.21ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 275862.72ms IncrementalHoareTripleChecker+Time [2021-11-02 21:21:12,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31347 Valid, 410 Invalid, 62577 Unknown, 0 Unchecked, 288.21ms Time], IncrementalHoareTripleChecker [3 Valid, 62573 Invalid, 1 Unknown, 0 Unchecked, 275862.72ms Time] [2021-11-02 21:21:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50322 states. [2021-11-02 21:21:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50322 to 50308. [2021-11-02 21:21:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 50067 states have (on average 1.2477879641280685) internal successors, (62473), 50111 states have internal predecessors, (62473), 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) [2021-11-02 21:21:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 62801 transitions. [2021-11-02 21:21:12,972 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 62801 transitions. Word has length 84 [2021-11-02 21:21:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:21:12,973 INFO L470 AbstractCegarLoop]: Abstraction has 50308 states and 62801 transitions. [2021-11-02 21:21:12,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-02 21:21:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 62801 transitions. [2021-11-02 21:21:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 21:21:12,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:21:12,976 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] [2021-11-02 21:21:12,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 21:21:12,976 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:21:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:21:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1001384947, now seen corresponding path program 1 times [2021-11-02 21:21:12,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:21:12,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964181687] [2021-11-02 21:21:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:21:12,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:21:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:21:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 21:21:13,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:21:13,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964181687] [2021-11-02 21:21:13,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964181687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:21:13,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:21:13,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:21:13,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056611600] [2021-11-02 21:21:13,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:21:13,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:21:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:21:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:21:13,242 INFO L87 Difference]: Start difference. First operand 50308 states and 62801 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2021-11-02 21:21:14,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:21:32,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15