./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-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-08_1a-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 18adc7ce46ffd1a3ff82c3c7fa6ef66e3ed2399c064dd9dfbe8501509215a2b1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 17:41:55,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 17:41:55,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 17:41:55,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 17:41:55,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 17:41:55,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 17:41:55,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 17:41:55,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 17:41:55,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 17:41:55,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 17:41:55,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 17:41:55,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 17:41:55,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 17:41:55,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 17:41:55,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 17:41:55,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 17:41:55,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 17:41:55,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 17:41:55,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 17:41:55,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 17:41:55,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 17:41:55,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 17:41:55,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 17:41:55,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 17:41:55,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 17:41:55,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 17:41:55,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 17:41:55,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 17:41:55,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 17:41:55,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 17:41:55,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 17:41:55,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 17:41:55,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 17:41:55,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 17:41:55,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 17:41:55,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 17:41:55,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 17:41:55,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 17:41:55,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 17:41:55,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 17:41:55,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 17:41:55,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 17:41:55,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 17:41:55,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 17:41:55,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 17:41:55,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 17:41:55,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 17:41:55,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 17:41:55,387 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 17:41:55,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 17:41:55,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 17:41:55,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 17:41:55,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 17:41:55,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 17:41:55,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 17:41:55,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 17:41:55,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 17:41:55,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 17:41:55,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 17:41:55,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 17:41:55,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 17:41:55,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:41:55,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 17:41:55,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 17:41:55,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 17:41:55,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 17:41:55,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 17:41:55,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 17:41:55,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 17:41:55,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 17:41:55,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 17:41:55,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18adc7ce46ffd1a3ff82c3c7fa6ef66e3ed2399c064dd9dfbe8501509215a2b1 [2021-11-05 17:41:55,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 17:41:55,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 17:41:55,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 17:41:55,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 17:41:55,667 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 17:41:55,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-05 17:41:55,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edbc3855/042c1a2177ee46a88c25e9fa5ba43801/FLAG1e8444cfc [2021-11-05 17:41:56,446 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 17:41:56,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-05 17:41:56,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edbc3855/042c1a2177ee46a88c25e9fa5ba43801/FLAG1e8444cfc [2021-11-05 17:41:56,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edbc3855/042c1a2177ee46a88c25e9fa5ba43801 [2021-11-05 17:41:56,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 17:41:56,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 17:41:56,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 17:41:56,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 17:41:56,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 17:41:56,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:41:56" (1/1) ... [2021-11-05 17:41:56,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694a0161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:41:56, skipping insertion in model container [2021-11-05 17:41:56,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:41:56" (1/1) ... [2021-11-05 17:41:56,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 17:41:56,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 17:41:59,561 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-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i[376341,376354] [2021-11-05 17:41:59,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:41:59,661 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 17:42:00,039 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-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i[376341,376354] [2021-11-05 17:42:00,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:42:00,283 INFO L208 MainTranslator]: Completed translation [2021-11-05 17:42:00,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00 WrapperNode [2021-11-05 17:42:00,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 17:42:00,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 17:42:00,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 17:42:00,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 17:42:00,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:00,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:03,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 17:42:03,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 17:42:03,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 17:42:03,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 17:42:03,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:03,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:04,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:04,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:06,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:06,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:07,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:07,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 17:42:07,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 17:42:07,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 17:42:07,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 17:42:07,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (1/1) ... [2021-11-05 17:42:07,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:42:07,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:42:07,797 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) [2021-11-05 17:42:07,816 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 [2021-11-05 17:42:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 17:42:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-05 17:42:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-05 17:42:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-05 17:42:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-05 17:42:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-05 17:42:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-05 17:42:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-05 17:42:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-05 17:42:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-05 17:42:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-05 17:42:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-05 17:42:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-05 17:42:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-05 17:42:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 17:42:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-05 17:42:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-05 17:42:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 17:42:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 17:42:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 17:42:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-05 17:42:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-05 17:42:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 17:42:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-05 17:42:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-05 17:42:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-05 17:42:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-05 17:42:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-05 17:42:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-05 17:42:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_12 [2021-11-05 17:42:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_12 [2021-11-05 17:42:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 17:42:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-05 17:42:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-05 17:42:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 17:42:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 17:42:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 17:42:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-05 17:42:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-05 17:42:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-05 17:42:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-05 17:42:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 17:42:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 17:42:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_11 [2021-11-05 17:42:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_11 [2021-11-05 17:42:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-05 17:42:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-05 17:42:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 17:42:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 17:42:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-05 17:42:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-05 17:42:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 17:42:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 17:42:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-05 17:42:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-05 17:42:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-05 17:42:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-05 17:42:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-05 17:42:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-05 17:42:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 17:42:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-05 17:42:07,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-05 17:42:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-05 17:42:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-05 17:42:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-05 17:42:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-05 17:42:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-05 17:42:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 17:42:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-05 17:42:07,844 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-05 17:42:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-05 17:42:07,844 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-05 17:42:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-05 17:42:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-05 17:42:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-05 17:42:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-05 17:42:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-05 17:42:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 17:42:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-05 17:42:57,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 17:42:57,296 INFO L299 CfgBuilder]: Removed 35674 assume(true) statements. [2021-11-05 17:42:57,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:42:57 BoogieIcfgContainer [2021-11-05 17:42:57,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 17:42:57,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 17:42:57,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 17:42:57,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 17:42:57,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 05:41:56" (1/3) ... [2021-11-05 17:42:57,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d4a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:42:57, skipping insertion in model container [2021-11-05 17:42:57,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:42:00" (2/3) ... [2021-11-05 17:42:57,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d4a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:42:57, skipping insertion in model container [2021-11-05 17:42:57,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:42:57" (3/3) ... [2021-11-05 17:42:57,324 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-05 17:42:57,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 17:42:57,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-05 17:42:57,439 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 17:42:57,445 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 [2021-11-05 17:42:57,445 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-05 17:42:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 25806 states, 25687 states have (on average 1.2939619262662048) internal successors, (33238), 25707 states have internal predecessors, (33238), 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) [2021-11-05 17:42:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 17:42:57,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:42:57,734 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] [2021-11-05 17:42:57,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 17:42:57,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:42:57,739 INFO L85 PathProgramCache]: Analyzing trace with hash 112333456, now seen corresponding path program 1 times [2021-11-05 17:42:57,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:42:57,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958778324] [2021-11-05 17:42:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:42:57,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:42:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:42:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:42:58,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:42:58,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958778324] [2021-11-05 17:42:58,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958778324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:42:58,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:42:58,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:42:58,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871520325] [2021-11-05 17:42:58,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:42:58,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 17:42:58,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:42:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 17:42:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:42:58,536 INFO L87 Difference]: Start difference. First operand has 25806 states, 25687 states have (on average 1.2939619262662048) internal successors, (33238), 25707 states have internal predecessors, (33238), 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) [2021-11-05 17:42:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:42:59,159 INFO L93 Difference]: Finished difference Result 51608 states and 66881 transitions. [2021-11-05 17:42:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 17:42:59,161 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 [2021-11-05 17:42:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:42:59,267 INFO L225 Difference]: With dead ends: 51608 [2021-11-05 17:42:59,268 INFO L226 Difference]: Without dead ends: 25185 [2021-11-05 17:42:59,370 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 [2021-11-05 17:42:59,373 INFO L933 BasicCegarLoop]: 32680 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, 32680 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 17:42:59,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32680 Invalid, 0 Unknown, 0 Unchecked, 69.59ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 17:42:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2021-11-05 17:43:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 25185. [2021-11-05 17:43:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25185 states, 25067 states have (on average 1.247775960426058) internal successors, (31278), 25086 states have internal predecessors, (31278), 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) [2021-11-05 17:43:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25185 states to 25185 states and 31442 transitions. [2021-11-05 17:43:00,269 INFO L78 Accepts]: Start accepts. Automaton has 25185 states and 31442 transitions. Word has length 76 [2021-11-05 17:43:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:43:00,269 INFO L470 AbstractCegarLoop]: Abstraction has 25185 states and 31442 transitions. [2021-11-05 17:43:00,270 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) [2021-11-05 17:43:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 25185 states and 31442 transitions. [2021-11-05 17:43:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 17:43:00,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:43:00,276 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] [2021-11-05 17:43:00,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 17:43:00,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 17:43:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:43:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash 990491810, now seen corresponding path program 1 times [2021-11-05 17:43:00,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:43:00,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143408850] [2021-11-05 17:43:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:43:00,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:43:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:43:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:43:00,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:43:00,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143408850] [2021-11-05 17:43:00,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143408850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:43:00,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:43:00,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:43:00,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293668254] [2021-11-05 17:43:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:43:00,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:43:00,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:43:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:43:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:43:00,536 INFO L87 Difference]: Start difference. First operand 25185 states and 31442 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) [2021-11-05 17:43:02,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:43:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:43:03,848 INFO L93 Difference]: Finished difference Result 75387 states and 94137 transitions. [2021-11-05 17:43:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:43:03,849 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 [2021-11-05 17:43:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:43:04,013 INFO L225 Difference]: With dead ends: 75387 [2021-11-05 17:43:04,014 INFO L226 Difference]: Without dead ends: 50267 [2021-11-05 17:43:04,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:43:04,096 INFO L933 BasicCegarLoop]: 31521 mSDtfsCounter, 31336 mSDsluCounter, 31411 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2083.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31336 SdHoareTripleChecker+Valid, 62932 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.90ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2235.29ms IncrementalHoareTripleChecker+Time [2021-11-05 17:43:04,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31336 Valid, 62932 Invalid, 15 Unknown, 0 Unchecked, 69.90ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2235.29ms Time] [2021-11-05 17:43:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50267 states. [2021-11-05 17:43:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50267 to 50263. [2021-11-05 17:43:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50263 states, 50030 states have (on average 1.2479512292624426) internal successors, (62435), 50066 states have internal predecessors, (62435), 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) [2021-11-05 17:43:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50263 states to 50263 states and 62763 transitions. [2021-11-05 17:43:05,438 INFO L78 Accepts]: Start accepts. Automaton has 50263 states and 62763 transitions. Word has length 76 [2021-11-05 17:43:05,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:43:05,439 INFO L470 AbstractCegarLoop]: Abstraction has 50263 states and 62763 transitions. [2021-11-05 17:43:05,439 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) [2021-11-05 17:43:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 50263 states and 62763 transitions. [2021-11-05 17:43:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 17:43:05,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:43:05,442 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] [2021-11-05 17:43:05,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 17:43:05,442 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 17:43:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:43:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1067076941, now seen corresponding path program 1 times [2021-11-05 17:43:05,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:43:05,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823745350] [2021-11-05 17:43:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:43:05,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:43:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:43:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:43:05,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:43:05,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823745350] [2021-11-05 17:43:05,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823745350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:43:05,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:43:05,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:43:05,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324622755] [2021-11-05 17:43:05,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:43:05,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:43:05,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:43:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:43:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:43:05,715 INFO L87 Difference]: Start difference. First operand 50263 states and 62763 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) [2021-11-05 17:43:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:43:07,289 INFO L93 Difference]: Finished difference Result 150653 states and 188302 transitions. [2021-11-05 17:43:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:43:07,290 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 [2021-11-05 17:43:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:43:07,593 INFO L225 Difference]: With dead ends: 150653 [2021-11-05 17:43:07,593 INFO L226 Difference]: Without dead ends: 100452 [2021-11-05 17:43:07,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:43:07,740 INFO L933 BasicCegarLoop]: 31611 mSDtfsCounter, 31357 mSDsluCounter, 31360 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31357 SdHoareTripleChecker+Valid, 62971 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.92ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.34ms IncrementalHoareTripleChecker+Time [2021-11-05 17:43:07,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31357 Valid, 62971 Invalid, 15 Unknown, 0 Unchecked, 63.92ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 23.34ms Time] [2021-11-05 17:43:08,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100452 states. [2021-11-05 17:43:09,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100452 to 100446. [2021-11-05 17:43:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100446 states, 99983 states have (on average 1.2480021603672624) internal successors, (124779), 100053 states have internal predecessors, (124779), 328 states have call successors, (328), 132 states have call predecessors, (328), 132 states have return successors, (328), 304 states have call predecessors, (328), 328 states have call successors, (328) [2021-11-05 17:43:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100446 states to 100446 states and 125435 transitions. [2021-11-05 17:43:10,102 INFO L78 Accepts]: Start accepts. Automaton has 100446 states and 125435 transitions. Word has length 79 [2021-11-05 17:43:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:43:10,103 INFO L470 AbstractCegarLoop]: Abstraction has 100446 states and 125435 transitions. [2021-11-05 17:43:10,103 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) [2021-11-05 17:43:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 100446 states and 125435 transitions. [2021-11-05 17:43:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-05 17:43:10,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:43:10,112 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:43:10,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 17:43:10,113 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 17:43:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:43:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2029203233, now seen corresponding path program 1 times [2021-11-05 17:43:10,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:43:10,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164780512] [2021-11-05 17:43:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:43:10,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:43:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:43:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-05 17:43:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:43:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:43:10,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:43:10,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164780512] [2021-11-05 17:43:10,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164780512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:43:10,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839903360] [2021-11-05 17:43:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:43:10,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:43:10,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:43:10,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:43:10,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 17:43:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:43:13,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 17:43:13,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:43:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:43:13,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:43:13,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839903360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:43:13,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:43:13,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-11-05 17:43:13,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303315140] [2021-11-05 17:43:13,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:43:13,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:43:13,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:43:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:43:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 17:43:13,442 INFO L87 Difference]: Start difference. First operand 100446 states and 125435 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:43:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:43:15,397 INFO L93 Difference]: Finished difference Result 200939 states and 251293 transitions. [2021-11-05 17:43:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:43:15,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2021-11-05 17:43:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:43:15,689 INFO L225 Difference]: With dead ends: 200939 [2021-11-05 17:43:15,689 INFO L226 Difference]: Without dead ends: 100558 [2021-11-05 17:43:15,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 318.45ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:43:15,926 INFO L933 BasicCegarLoop]: 31433 mSDtfsCounter, 30 mSDsluCounter, 94278 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 125711 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 184.25ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.38ms IncrementalHoareTripleChecker+Time [2021-11-05 17:43:15,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 125711 Invalid, 77 Unknown, 0 Unchecked, 184.25ms Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 75.38ms Time] [2021-11-05 17:43:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100558 states. [2021-11-05 17:43:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100558 to 100558. [2021-11-05 17:43:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100558 states, 100079 states have (on average 1.2478442030795671) internal successors, (124883), 100149 states have internal predecessors, (124883), 336 states have call successors, (336), 140 states have call predecessors, (336), 140 states have return successors, (336), 312 states have call predecessors, (336), 336 states have call successors, (336) [2021-11-05 17:43:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100558 states to 100558 states and 125555 transitions. [2021-11-05 17:43:18,273 INFO L78 Accepts]: Start accepts. Automaton has 100558 states and 125555 transitions. Word has length 106 [2021-11-05 17:43:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:43:18,273 INFO L470 AbstractCegarLoop]: Abstraction has 100558 states and 125555 transitions. [2021-11-05 17:43:18,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:43:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 100558 states and 125555 transitions. [2021-11-05 17:43:18,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 17:43:18,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:43:18,286 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] [2021-11-05 17:43:18,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 17:43:18,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:43:18,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 17:43:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:43:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash -369294790, now seen corresponding path program 1 times [2021-11-05 17:43:18,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:43:18,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112758630] [2021-11-05 17:43:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:43:18,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:43:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:43:18,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-05 17:43:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:43:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:43:18,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:43:18,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112758630] [2021-11-05 17:43:18,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112758630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:43:18,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:43:18,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:43:18,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713438981] [2021-11-05 17:43:18,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:43:18,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:43:18,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:43:18,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:43:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:43:18,752 INFO L87 Difference]: Start difference. First operand 100558 states and 125555 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:43:20,797 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 [] [2021-11-05 17:43:40,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:43:44,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:43:47,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:44:10,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:44:10,543 INFO L93 Difference]: Finished difference Result 234455 states and 293543 transitions. [2021-11-05 17:44:10,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:44:10,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2021-11-05 17:44:10,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:44:11,000 INFO L225 Difference]: With dead ends: 234455 [2021-11-05 17:44:11,000 INFO L226 Difference]: Without dead ends: 133962 [2021-11-05 17:44:11,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:44:11,245 INFO L933 BasicCegarLoop]: 33522 mSDtfsCounter, 11472 mSDsluCounter, 52220 mSDsCounter, 0 mSdLazyCounter, 13476 mSolverCounterSat, 365 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41855.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11482 SdHoareTripleChecker+Valid, 85742 SdHoareTripleChecker+Invalid, 13843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 266.14ms SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 13476 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48152.75ms IncrementalHoareTripleChecker+Time [2021-11-05 17:44:11,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11482 Valid, 85742 Invalid, 13843 Unknown, 0 Unchecked, 266.14ms Time], IncrementalHoareTripleChecker [365 Valid, 13476 Invalid, 2 Unknown, 0 Unchecked, 48152.75ms Time] [2021-11-05 17:44:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133962 states. [2021-11-05 17:44:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133962 to 128506. [2021-11-05 17:44:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128506 states, 127631 states have (on average 1.2498452570300318) internal successors, (159519), 127769 states have internal predecessors, (159519), 592 states have call successors, (592), 280 states have call predecessors, (592), 280 states have return successors, (592), 544 states have call predecessors, (592), 592 states have call successors, (592) [2021-11-05 17:44:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128506 states to 128506 states and 160703 transitions. [2021-11-05 17:44:14,745 INFO L78 Accepts]: Start accepts. Automaton has 128506 states and 160703 transitions. Word has length 114 [2021-11-05 17:44:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:44:14,746 INFO L470 AbstractCegarLoop]: Abstraction has 128506 states and 160703 transitions. [2021-11-05 17:44:14,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:44:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 128506 states and 160703 transitions. [2021-11-05 17:44:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-05 17:44:14,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:44:14,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:44:14,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 17:44:14,758 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 17:44:14,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:44:14,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1329452238, now seen corresponding path program 1 times [2021-11-05 17:44:14,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:44:14,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744916840] [2021-11-05 17:44:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:44:14,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:44:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-05 17:44:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-05 17:44:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:44:15,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:44:15,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744916840] [2021-11-05 17:44:15,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744916840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:44:15,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960089131] [2021-11-05 17:44:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:44:15,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:44:15,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:44:15,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:44:15,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 17:44:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:17,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 3694 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 17:44:17,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:44:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:44:18,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:44:18,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960089131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:44:18,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:44:18,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-05 17:44:18,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342376117] [2021-11-05 17:44:18,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:44:18,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:44:18,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:44:18,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:44:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-05 17:44:18,094 INFO L87 Difference]: Start difference. First operand 128506 states and 160703 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-05 17:44:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:44:21,134 INFO L93 Difference]: Finished difference Result 257211 states and 322357 transitions. [2021-11-05 17:44:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 17:44:21,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 118 [2021-11-05 17:44:21,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:44:21,649 INFO L225 Difference]: With dead ends: 257211 [2021-11-05 17:44:21,650 INFO L226 Difference]: Without dead ends: 128770 [2021-11-05 17:44:22,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 189.16ms TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-05 17:44:22,228 INFO L933 BasicCegarLoop]: 31431 mSDtfsCounter, 34 mSDsluCounter, 94279 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 125710 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.55ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.81ms IncrementalHoareTripleChecker+Time [2021-11-05 17:44:22,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 125710 Invalid, 98 Unknown, 0 Unchecked, 55.55ms Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 170.81ms Time] [2021-11-05 17:44:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128770 states. [2021-11-05 17:44:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128770 to 128754. [2021-11-05 17:44:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128754 states, 127839 states have (on average 1.2496890620233263) internal successors, (159759), 127977 states have internal predecessors, (159759), 616 states have call successors, (616), 296 states have call predecessors, (616), 296 states have return successors, (640), 568 states have call predecessors, (640), 616 states have call successors, (640) [2021-11-05 17:44:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128754 states to 128754 states and 161015 transitions. [2021-11-05 17:44:25,659 INFO L78 Accepts]: Start accepts. Automaton has 128754 states and 161015 transitions. Word has length 118 [2021-11-05 17:44:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:44:25,660 INFO L470 AbstractCegarLoop]: Abstraction has 128754 states and 161015 transitions. [2021-11-05 17:44:25,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-05 17:44:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 128754 states and 161015 transitions. [2021-11-05 17:44:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-05 17:44:25,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:44:25,678 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:44:25,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 17:44:25,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-05 17:44:25,891 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 17:44:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:44:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -444455622, now seen corresponding path program 1 times [2021-11-05 17:44:25,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:44:25,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848329136] [2021-11-05 17:44:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:44:25,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:44:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-05 17:44:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:44:26,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:44:26,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848329136] [2021-11-05 17:44:26,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848329136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:44:26,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702512028] [2021-11-05 17:44:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:44:26,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:44:26,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:44:26,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:44:26,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 17:44:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:28,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 17:44:28,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:44:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:44:28,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:44:28,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702512028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:44:28,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:44:28,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 17:44:28,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302411421] [2021-11-05 17:44:28,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:44:28,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:44:28,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:44:28,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:44:28,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:44:28,620 INFO L87 Difference]: Start difference. First operand 128754 states and 161015 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:44:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:44:32,373 INFO L93 Difference]: Finished difference Result 285781 states and 357755 transitions. [2021-11-05 17:44:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:44:32,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-11-05 17:44:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:44:32,894 INFO L225 Difference]: With dead ends: 285781 [2021-11-05 17:44:32,894 INFO L226 Difference]: Without dead ends: 157092