./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 173e3943 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-dev-173e394 [2021-11-06 15:46:09,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:46:09,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:46:09,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:46:09,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:46:09,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:46:09,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:46:09,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:46:09,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:46:09,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:46:09,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:46:09,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:46:09,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:46:09,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:46:09,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:46:09,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:46:09,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:46:09,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:46:09,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:46:09,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:46:09,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:46:09,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:46:09,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:46:09,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:46:09,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:46:09,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:46:09,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:46:09,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:46:09,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:46:09,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:46:09,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:46:09,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:46:09,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:46:09,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:46:09,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:46:09,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:46:09,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:46:09,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:46:09,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:46:09,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:46:09,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:46:09,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:46:09,483 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:46:09,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:46:09,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:46:09,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:46:09,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:46:09,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:46:09,485 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:46:09,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:46:09,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:46:09,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:46:09,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:46:09,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:46:09,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:46:09,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:46:09,487 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:46:09,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:46:09,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:46:09,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:46:09,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:46:09,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:46:09,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:46:09,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:46:09,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:46:09,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:46:09,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:46:09,489 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:46:09,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:46:09,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:46:09,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:46:09,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18adc7ce46ffd1a3ff82c3c7fa6ef66e3ed2399c064dd9dfbe8501509215a2b1 [2021-11-06 15:46:09,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:46:09,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:46:09,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:46:09,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:46:09,716 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:46:09,717 INFO L432 ainManager$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 [2021-11-06 15:46:09,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bfee713e/3fab1046371844e0b1c32837f0694e41/FLAG8b11fc1c4 [2021-11-06 15:46:10,404 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:46:10,404 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 [2021-11-06 15:46:10,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bfee713e/3fab1046371844e0b1c32837f0694e41/FLAG8b11fc1c4 [2021-11-06 15:46:10,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bfee713e/3fab1046371844e0b1c32837f0694e41 [2021-11-06 15:46:10,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:46:10,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:46:10,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:46:10,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:46:10,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:46:10,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:46:10" (1/1) ... [2021-11-06 15:46:10,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb83098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:10, skipping insertion in model container [2021-11-06 15:46:10,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:46:10" (1/1) ... [2021-11-06 15:46:10,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:46:10,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:46:13,296 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] [2021-11-06 15:46:13,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:46:13,377 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:46:13,672 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] [2021-11-06 15:46:13,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:46:13,832 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:46:13,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13 WrapperNode [2021-11-06 15:46:13,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:46:13,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:46:13,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:46:13,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:46:13,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:13,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:17,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:46:17,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:46:17,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:46:17,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:46:17,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:17,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:18,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:18,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:19,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:19,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:20,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:20,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:46:20,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:46:20,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:46:20,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:46:20,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (1/1) ... [2021-11-06 15:46:20,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:46:20,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:46:20,935 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) [2021-11-06 15:46:20,956 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 [2021-11-06 15:46:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 15:46:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-06 15:46:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-06 15:46:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-06 15:46:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-06 15:46:20,968 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-06 15:46:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-06 15:46:20,968 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-06 15:46:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-06 15:46:20,968 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-06 15:46:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-06 15:46:20,968 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-06 15:46:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-06 15:46:20,969 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-06 15:46:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 15:46:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-06 15:46:20,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-06 15:46:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:46:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:46:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:46:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-06 15:46:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-06 15:46:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:46:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-06 15:46:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-06 15:46:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-06 15:46:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-06 15:46:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-06 15:46:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-06 15:46:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_12 [2021-11-06 15:46:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_12 [2021-11-06 15:46:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:46:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-06 15:46:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-06 15:46:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:46:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:46:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:46:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-06 15:46:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-06 15:46:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-06 15:46:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-06 15:46:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:46:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:46:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_11 [2021-11-06 15:46:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_11 [2021-11-06 15:46:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-06 15:46:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-06 15:46:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:46:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:46:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-06 15:46:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-06 15:46:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:46:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:46:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-06 15:46:20,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-06 15:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-06 15:46:20,974 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-06 15:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-06 15:46:20,974 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-06 15:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-06 15:46:20,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-06 15:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-06 15:46:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-06 15:46:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-06 15:46:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-06 15:46:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-06 15:46:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:46:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-06 15:46:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-06 15:46:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-06 15:46:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-06 15:46:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-06 15:46:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-06 15:46:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-06 15:46:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-06 15:46:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-06 15:46:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-06 15:46:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-06 15:46:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-06 15:46:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-06 15:46:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-06 15:46:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-06 15:46:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-06 15:46:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-06 15:46:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:46:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 15:47:10,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:47:10,240 INFO L299 CfgBuilder]: Removed 35674 assume(true) statements. [2021-11-06 15:47:10,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:47:10 BoogieIcfgContainer [2021-11-06 15:47:10,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:47:10,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:47:10,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:47:10,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:47:10,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:46:10" (1/3) ... [2021-11-06 15:47:10,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111759c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:47:10, skipping insertion in model container [2021-11-06 15:47:10,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:13" (2/3) ... [2021-11-06 15:47:10,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111759c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:47:10, skipping insertion in model container [2021-11-06 15:47:10,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:47:10" (3/3) ... [2021-11-06 15:47:10,264 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-06 15:47:10,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:47:10,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 15:47:10,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:47:10,368 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 [2021-11-06 15:47:10,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 15:47:10,610 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) [2021-11-06 15:47:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 15:47:10,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:47:10,623 INFO L513 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] [2021-11-06 15:47:10,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:47:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:47:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 112333456, now seen corresponding path program 1 times [2021-11-06 15:47:10,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:47:10,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744388035] [2021-11-06 15:47:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:10,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:11,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:11,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744388035] [2021-11-06 15:47:11,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744388035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:11,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:47:11,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:47:11,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641319018] [2021-11-06 15:47:11,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:47:11,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:47:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:47:11,236 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) [2021-11-06 15:47:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:47:11,985 INFO L93 Difference]: Finished difference Result 51608 states and 66881 transitions. [2021-11-06 15:47:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:47:11,986 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 [2021-11-06 15:47:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:47:12,095 INFO L225 Difference]: With dead ends: 51608 [2021-11-06 15:47:12,095 INFO L226 Difference]: Without dead ends: 25185 [2021-11-06 15:47:12,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:47:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2021-11-06 15:47:12,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 25185. [2021-11-06 15:47:12,691 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) [2021-11-06 15:47:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25185 states to 25185 states and 31442 transitions. [2021-11-06 15:47:12,773 INFO L78 Accepts]: Start accepts. Automaton has 25185 states and 31442 transitions. Word has length 76 [2021-11-06 15:47:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:47:12,773 INFO L470 AbstractCegarLoop]: Abstraction has 25185 states and 31442 transitions. [2021-11-06 15:47:12,774 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) [2021-11-06 15:47:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 25185 states and 31442 transitions. [2021-11-06 15:47:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 15:47:12,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:47:12,781 INFO L513 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] [2021-11-06 15:47:12,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:47:12,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:47:12,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:47:12,784 INFO L85 PathProgramCache]: Analyzing trace with hash 990491810, now seen corresponding path program 1 times [2021-11-06 15:47:12,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:47:12,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910004934] [2021-11-06 15:47:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:12,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:13,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:13,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910004934] [2021-11-06 15:47:13,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910004934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:13,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:47:13,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:47:13,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661065008] [2021-11-06 15:47:13,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:47:13,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:47:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:47:13,402 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) [2021-11-06 15:47:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:47:16,719 INFO L93 Difference]: Finished difference Result 75387 states and 94137 transitions. [2021-11-06 15:47:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:47:16,720 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 [2021-11-06 15:47:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:47:16,908 INFO L225 Difference]: With dead ends: 75387 [2021-11-06 15:47:16,909 INFO L226 Difference]: Without dead ends: 50267 [2021-11-06 15:47:16,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:47:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50267 states. [2021-11-06 15:47:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50267 to 50263. [2021-11-06 15:47:18,007 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) [2021-11-06 15:47:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50263 states to 50263 states and 62763 transitions. [2021-11-06 15:47:18,174 INFO L78 Accepts]: Start accepts. Automaton has 50263 states and 62763 transitions. Word has length 76 [2021-11-06 15:47:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:47:18,175 INFO L470 AbstractCegarLoop]: Abstraction has 50263 states and 62763 transitions. [2021-11-06 15:47:18,175 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) [2021-11-06 15:47:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 50263 states and 62763 transitions. [2021-11-06 15:47:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 15:47:18,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:47:18,178 INFO L513 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] [2021-11-06 15:47:18,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:47:18,179 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:47:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:47:18,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1067076941, now seen corresponding path program 1 times [2021-11-06 15:47:18,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:47:18,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200989823] [2021-11-06 15:47:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:18,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:18,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:18,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200989823] [2021-11-06 15:47:18,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200989823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:18,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:47:18,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:47:18,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345184297] [2021-11-06 15:47:18,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:47:18,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:47:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:47:18,449 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) [2021-11-06 15:47:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:47:20,169 INFO L93 Difference]: Finished difference Result 150653 states and 188302 transitions. [2021-11-06 15:47:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:47:20,170 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 [2021-11-06 15:47:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:47:20,497 INFO L225 Difference]: With dead ends: 150653 [2021-11-06 15:47:20,497 INFO L226 Difference]: Without dead ends: 100452 [2021-11-06 15:47:20,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:47:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100452 states. [2021-11-06 15:47:22,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100452 to 100446. [2021-11-06 15:47:22,683 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) [2021-11-06 15:47:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100446 states to 100446 states and 125435 transitions. [2021-11-06 15:47:22,926 INFO L78 Accepts]: Start accepts. Automaton has 100446 states and 125435 transitions. Word has length 79 [2021-11-06 15:47:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:47:22,928 INFO L470 AbstractCegarLoop]: Abstraction has 100446 states and 125435 transitions. [2021-11-06 15:47:22,928 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) [2021-11-06 15:47:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 100446 states and 125435 transitions. [2021-11-06 15:47:22,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 15:47:22,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:47:22,937 INFO L513 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] [2021-11-06 15:47:22,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:47:22,938 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] === [2021-11-06 15:47:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:47:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2029203233, now seen corresponding path program 1 times [2021-11-06 15:47:22,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:47:22,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242205031] [2021-11-06 15:47:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:22,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:23,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-06 15:47:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:23,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:23,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242205031] [2021-11-06 15:47:23,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242205031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:47:23,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435669728] [2021-11-06 15:47:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:23,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:47:23,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:47:23,805 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) [2021-11-06 15:47:23,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:47:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:26,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:47:26,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:47:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:26,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435669728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:26,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:47:26,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-11-06 15:47:26,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005743475] [2021-11-06 15:47:26,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:47:26,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:26,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:47:26,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:47:26,403 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) [2021-11-06 15:47:28,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:47:28,474 INFO L93 Difference]: Finished difference Result 200939 states and 251293 transitions. [2021-11-06 15:47:28,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:47:28,475 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 [2021-11-06 15:47:28,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:47:28,836 INFO L225 Difference]: With dead ends: 200939 [2021-11-06 15:47:28,836 INFO L226 Difference]: Without dead ends: 100558 [2021-11-06 15:47:29,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:47:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100558 states. [2021-11-06 15:47:30,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100558 to 100558. [2021-11-06 15:47:31,027 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) [2021-11-06 15:47:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100558 states to 100558 states and 125555 transitions. [2021-11-06 15:47:31,263 INFO L78 Accepts]: Start accepts. Automaton has 100558 states and 125555 transitions. Word has length 106 [2021-11-06 15:47:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:47:31,264 INFO L470 AbstractCegarLoop]: Abstraction has 100558 states and 125555 transitions. [2021-11-06 15:47:31,264 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) [2021-11-06 15:47:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 100558 states and 125555 transitions. [2021-11-06 15:47:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 15:47:31,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:47:31,275 INFO L513 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] [2021-11-06 15:47:31,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 15:47:31,491 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 [2021-11-06 15:47:31,492 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] === [2021-11-06 15:47:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:47:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash -369294790, now seen corresponding path program 1 times [2021-11-06 15:47:31,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:47:31,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517559693] [2021-11-06 15:47:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:31,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-06 15:47:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:32,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:32,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517559693] [2021-11-06 15:47:32,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517559693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:32,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:47:32,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:47:32,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742047270] [2021-11-06 15:47:32,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:47:32,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:32,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:47:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:47:32,183 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) [2021-11-06 15:48:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:48:15,249 INFO L93 Difference]: Finished difference Result 234455 states and 293543 transitions. [2021-11-06 15:48:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:48:15,254 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 [2021-11-06 15:48:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:48:16,014 INFO L225 Difference]: With dead ends: 234455 [2021-11-06 15:48:16,015 INFO L226 Difference]: Without dead ends: 133962 [2021-11-06 15:48:16,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:48:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133962 states. [2021-11-06 15:48:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133962 to 128506. [2021-11-06 15:48:18,805 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) [2021-11-06 15:48:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128506 states to 128506 states and 160703 transitions. [2021-11-06 15:48:19,131 INFO L78 Accepts]: Start accepts. Automaton has 128506 states and 160703 transitions. Word has length 114 [2021-11-06 15:48:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:48:19,132 INFO L470 AbstractCegarLoop]: Abstraction has 128506 states and 160703 transitions. [2021-11-06 15:48:19,132 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) [2021-11-06 15:48:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 128506 states and 160703 transitions. [2021-11-06 15:48:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 15:48:19,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:48:19,137 INFO L513 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] [2021-11-06 15:48:19,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:48:19,138 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] === [2021-11-06 15:48:19,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:48:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1329452238, now seen corresponding path program 1 times [2021-11-06 15:48:19,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:48:19,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090230506] [2021-11-06 15:48:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:48:19,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:48:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-06 15:48:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-06 15:48:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:48:19,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:48:19,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090230506] [2021-11-06 15:48:19,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090230506] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:48:19,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559133549] [2021-11-06 15:48:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:48:19,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:48:19,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:48:19,634 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) [2021-11-06 15:48:19,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:48:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:21,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 3694 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:48:21,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:48:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:48:22,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559133549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:48:22,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:48:22,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-06 15:48:22,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978668473] [2021-11-06 15:48:22,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:48:22,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:48:22,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:48:22,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-06 15:48:22,293 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) [2021-11-06 15:48:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:48:25,069 INFO L93 Difference]: Finished difference Result 257211 states and 322357 transitions. [2021-11-06 15:48:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:48:25,070 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 [2021-11-06 15:48:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:48:25,860 INFO L225 Difference]: With dead ends: 257211 [2021-11-06 15:48:25,861 INFO L226 Difference]: Without dead ends: 128770 [2021-11-06 15:48:26,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-06 15:48:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128770 states. [2021-11-06 15:48:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128770 to 128754. [2021-11-06 15:48:28,852 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) [2021-11-06 15:48:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128754 states to 128754 states and 161015 transitions. [2021-11-06 15:48:29,146 INFO L78 Accepts]: Start accepts. Automaton has 128754 states and 161015 transitions. Word has length 118 [2021-11-06 15:48:29,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:48:29,146 INFO L470 AbstractCegarLoop]: Abstraction has 128754 states and 161015 transitions. [2021-11-06 15:48:29,146 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) [2021-11-06 15:48:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 128754 states and 161015 transitions. [2021-11-06 15:48:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 15:48:29,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:48:29,163 INFO L513 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] [2021-11-06 15:48:29,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 15:48:29,390 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 [2021-11-06 15:48:29,391 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] === [2021-11-06 15:48:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:48:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -444455622, now seen corresponding path program 1 times [2021-11-06 15:48:29,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:48:29,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754007917] [2021-11-06 15:48:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:48:29,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:48:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:29,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-06 15:48:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:48:29,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:48:29,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754007917] [2021-11-06 15:48:29,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754007917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:48:29,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35218598] [2021-11-06 15:48:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:48:29,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:48:29,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:48:29,623 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) [2021-11-06 15:48:29,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 15:48:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:32,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 15:48:32,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:48:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:48:32,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35218598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:48:32,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:48:32,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 15:48:32,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036168799] [2021-11-06 15:48:32,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:48:32,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:48:32,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:48:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:48:32,496 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)