./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 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-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-4d01470 [2021-11-02 20:14:44,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:14:44,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:14:44,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:14:44,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:14:44,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:14:44,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:14:44,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:14:44,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:14:44,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:14:44,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:14:44,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:14:44,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:14:44,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:14:44,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:14:44,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:14:44,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:14:44,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:14:44,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:14:44,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:14:44,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:14:44,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:14:44,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:14:44,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:14:44,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:14:44,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:14:44,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:14:44,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:14:44,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:14:44,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:14:44,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:14:44,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:14:44,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:14:44,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:14:44,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:14:44,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:14:44,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:14:44,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:14:44,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:14:44,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:14:44,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:14:44,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:14:44,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:14:44,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:14:44,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:14:44,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:14:44,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:14:44,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:14:44,500 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:14:44,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:14:44,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:14:44,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:14:44,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:14:44,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:14:44,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:14:44,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:14:44,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:14:44,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:14:44,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:14:44,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:14:44,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:14:44,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:14:44,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:14:44,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:14:44,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:14:44,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:14:44,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:14:44,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:14:44,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:14:44,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:14:44,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:14:44,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18adc7ce46ffd1a3ff82c3c7fa6ef66e3ed2399c064dd9dfbe8501509215a2b1 [2021-11-02 20:14:44,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:14:44,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:14:44,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:14:44,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:14:44,783 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:14:44,784 INFO L432 ainManager$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 [2021-11-02 20:14:44,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3c61c17/bc5222e8a6e54311bee81bc09919208a/FLAG3ccb26f48 [2021-11-02 20:14:45,672 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:14:45,673 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 [2021-11-02 20:14:45,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3c61c17/bc5222e8a6e54311bee81bc09919208a/FLAG3ccb26f48 [2021-11-02 20:14:46,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3c61c17/bc5222e8a6e54311bee81bc09919208a [2021-11-02 20:14:46,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:14:46,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:14:46,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:14:46,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:14:46,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:14:46,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:46" (1/1) ... [2021-11-02 20:14:46,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4898bd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:46, skipping insertion in model container [2021-11-02 20:14:46,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:46" (1/1) ... [2021-11-02 20:14:46,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:14:46,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:14:50,125 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] [2021-11-02 20:14:50,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:14:50,221 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:14:50,587 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] [2021-11-02 20:14:50,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:14:50,782 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:14:50,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50 WrapperNode [2021-11-02 20:14:50,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:14:50,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:14:50,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:14:50,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:14:50,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:14:50,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:14:55,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:14:55,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:14:55,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:14:55,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:14:55,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:14:55,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:14:57,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:14:57,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:14:59,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:14:59,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:15:00,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:15:01,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:15:01,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:15:01,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:15:01,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:15:01,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (1/1) ... [2021-11-02 20:15:01,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:15:01,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:15:01,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 20:15:01,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 20:15:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 20:15:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-02 20:15:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-02 20:15:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-02 20:15:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-02 20:15:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-02 20:15:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-02 20:15:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-02 20:15:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-02 20:15:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-02 20:15:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-02 20:15:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-02 20:15:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-02 20:15:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-02 20:15:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 20:15:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-02 20:15:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-02 20:15:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:15:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 20:15:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 20:15:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-02 20:15:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-02 20:15:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:15:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-02 20:15:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-02 20:15:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-02 20:15:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-02 20:15:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-02 20:15:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-02 20:15:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_12 [2021-11-02 20:15:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_12 [2021-11-02 20:15:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:15:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-02 20:15:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-02 20:15:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:15:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:15:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:15:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-02 20:15:01,109 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-02 20:15:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-02 20:15:01,109 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-02 20:15:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:15:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 20:15:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_11 [2021-11-02 20:15:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_11 [2021-11-02 20:15:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-02 20:15:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-02 20:15:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 20:15:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 20:15:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-02 20:15:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-02 20:15:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:15:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:15:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-02 20:15:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-02 20:15:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-02 20:15:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-02 20:15:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-02 20:15:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-02 20:15:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:15:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-02 20:15:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-02 20:15:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-02 20:15:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-02 20:15:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-02 20:15:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-02 20:15:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-02 20:15:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:15:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-02 20:15:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-02 20:15:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-02 20:15:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-02 20:15:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-02 20:15:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-02 20:15:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-02 20:15:01,117 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-02 20:15:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-02 20:15:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-02 20:15:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-02 20:15:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-02 20:15:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-02 20:15:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-02 20:15:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-02 20:15:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-02 20:15:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-02 20:15:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:15:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 20:15:16,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 20:15:16,923 INFO L299 CfgBuilder]: Removed 35674 assume(true) statements. [2021-11-02 20:15:16,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:16 BoogieIcfgContainer [2021-11-02 20:15:16,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 20:15:16,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 20:15:16,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 20:15:16,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 20:15:16,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:14:46" (1/3) ... [2021-11-02 20:15:16,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315f5c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:15:16, skipping insertion in model container [2021-11-02 20:15:16,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:50" (2/3) ... [2021-11-02 20:15:16,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315f5c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:15:16, skipping insertion in model container [2021-11-02 20:15:16,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:16" (3/3) ... [2021-11-02 20:15:16,956 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-02 20:15:16,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 20:15:16,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-02 20:15:17,074 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 20:15:17,080 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 20:15:17,080 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 20:15:17,396 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) [2021-11-02 20:15:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 20:15:17,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:15:17,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:15:17,407 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:15:17,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:15:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash 112333456, now seen corresponding path program 1 times [2021-11-02 20:15:17,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:15:17,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007127379] [2021-11-02 20:15:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:15:17,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:15:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:15:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:15:18,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:15:18,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007127379] [2021-11-02 20:15:18,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007127379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:15:18,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:15:18,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:15:18,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356973576] [2021-11-02 20:15:18,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 20:15:18,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:15:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 20:15:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:15:18,260 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) [2021-11-02 20:15:20,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:26,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:10,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:22,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:32,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:17:05,991 INFO L93 Difference]: Finished difference Result 51608 states and 66881 transitions. [2021-11-02 20:17:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 20:17:05,994 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 20:17:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:17:06,132 INFO L225 Difference]: With dead ends: 51608 [2021-11-02 20:17:06,133 INFO L226 Difference]: Without dead ends: 25185 [2021-11-02 20:17:06,388 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 [2021-11-02 20:17:06,395 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31896 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94075.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 31899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 136.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31896 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105062.26ms IncrementalHoareTripleChecker+Time [2021-11-02 20:17:06,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 781 Invalid, 31899 Unknown, 0 Unchecked, 136.68ms Time], IncrementalHoareTripleChecker [0 Valid, 31896 Invalid, 3 Unknown, 0 Unchecked, 105062.26ms Time] [2021-11-02 20:17:06,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2021-11-02 20:17:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 25185. [2021-11-02 20:17:07,107 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) [2021-11-02 20:17:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25185 states to 25185 states and 31442 transitions. [2021-11-02 20:17:07,214 INFO L78 Accepts]: Start accepts. Automaton has 25185 states and 31442 transitions. Word has length 76 [2021-11-02 20:17:07,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:17:07,215 INFO L470 AbstractCegarLoop]: Abstraction has 25185 states and 31442 transitions. [2021-11-02 20:17:07,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:17:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 25185 states and 31442 transitions. [2021-11-02 20:17:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 20:17:07,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:17:07,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:17:07,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 20:17:07,226 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:17:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:17:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash 990491810, now seen corresponding path program 1 times [2021-11-02 20:17:07,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:17:07,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730782518] [2021-11-02 20:17:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:17:07,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:17:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:17:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:17:07,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:17:07,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730782518] [2021-11-02 20:17:07,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730782518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:17:07,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:17:07,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:17:07,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434565890] [2021-11-02 20:17:07,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:17:07,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:17:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:17:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:17:07,633 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) [2021-11-02 20:17:08,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:10,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:24,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:48,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:48,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:19:12,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:19:27,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:19:32,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:19:34,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:19:39,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:20:34,413 INFO L93 Difference]: Finished difference Result 50337 states and 62857 transitions. [2021-11-02 20:20:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:20:34,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 20:20:34,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:20:34,517 INFO L225 Difference]: With dead ends: 50337 [2021-11-02 20:20:34,517 INFO L226 Difference]: Without dead ends: 25192 [2021-11-02 20:20:34,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:20:34,584 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 31403 mSDsCounter, 0 mSdLazyCounter, 62547 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183023.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 62561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 311.05ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62547 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204079.83ms IncrementalHoareTripleChecker+Time [2021-11-02 20:20:34,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 62561 Unknown, 0 Unchecked, 311.05ms Time], IncrementalHoareTripleChecker [12 Valid, 62547 Invalid, 2 Unknown, 0 Unchecked, 204079.83ms Time] [2021-11-02 20:20:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25192 states. [2021-11-02 20:20:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25192 to 25192. [2021-11-02 20:20:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25192 states, 25074 states have (on average 1.247706787907793) internal successors, (31285), 25093 states have internal predecessors, (31285), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-02 20:20:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25192 states to 25192 states and 31449 transitions. [2021-11-02 20:20:35,370 INFO L78 Accepts]: Start accepts. Automaton has 25192 states and 31449 transitions. Word has length 76 [2021-11-02 20:20:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:20:35,370 INFO L470 AbstractCegarLoop]: Abstraction has 25192 states and 31449 transitions. [2021-11-02 20:20:35,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:20:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 25192 states and 31449 transitions. [2021-11-02 20:20:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 20:20:35,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:20:35,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:20:35,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 20:20:35,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:20:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:20:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1931741242, now seen corresponding path program 1 times [2021-11-02 20:20:35,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:20:35,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280909794] [2021-11-02 20:20:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:20:35,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:20:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:20:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 20:20:35,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:20:35,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280909794] [2021-11-02 20:20:35,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280909794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:20:35,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:20:35,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:20:35,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471276470] [2021-11-02 20:20:35,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:20:35,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:20:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:20:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:20:35,667 INFO L87 Difference]: Start difference. First operand 25192 states and 31449 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:20:36,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:38,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:50,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:21:05,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:21:14,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:20,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:50,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:54,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:55,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:23:01,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:23:03,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:23:09,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:23:24,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:23:54,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:25:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:25:00,816 INFO L93 Difference]: Finished difference Result 50331 states and 62843 transitions. [2021-11-02 20:25:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:25:00,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 20:25:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:25:00,911 INFO L225 Difference]: With dead ends: 50331 [2021-11-02 20:25:00,912 INFO L226 Difference]: Without dead ends: 25195 [2021-11-02 20:25:00,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:25:00,980 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 31401 mSDsCounter, 0 mSdLazyCounter, 62546 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224629.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 62555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 321.31ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62546 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 262347.30ms IncrementalHoareTripleChecker+Time [2021-11-02 20:25:00,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 62555 Unknown, 0 Unchecked, 321.31ms Time], IncrementalHoareTripleChecker [4 Valid, 62546 Invalid, 5 Unknown, 0 Unchecked, 262347.30ms Time] [2021-11-02 20:25:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25195 states. [2021-11-02 20:25:01,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25195 to 25195. [2021-11-02 20:25:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25195 states, 25077 states have (on average 1.247677154364557) internal successors, (31288), 25096 states have internal predecessors, (31288), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-02 20:25:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25195 states to 25195 states and 31452 transitions. [2021-11-02 20:25:01,581 INFO L78 Accepts]: Start accepts. Automaton has 25195 states and 31452 transitions. Word has length 83 [2021-11-02 20:25:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:25:01,582 INFO L470 AbstractCegarLoop]: Abstraction has 25195 states and 31452 transitions. [2021-11-02 20:25:01,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:25:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 25195 states and 31452 transitions. [2021-11-02 20:25:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 20:25:01,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:25:01,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:25:01,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 20:25:01,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:25:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:25:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash -237185366, now seen corresponding path program 1 times [2021-11-02 20:25:01,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:25:01,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897856005] [2021-11-02 20:25:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:25:01,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:25:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:25:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 20:25:01,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:25:01,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897856005] [2021-11-02 20:25:01,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897856005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:25:01,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:25:01,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:25:01,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516764598] [2021-11-02 20:25:01,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:25:01,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:25:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:25:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:25:01,910 INFO L87 Difference]: Start difference. First operand 25195 states and 31452 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:25:03,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:25:05,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:25:33,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:25:41,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:25:52,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:26:11,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15