./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 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-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-5b36d44 [2021-11-07 14:15:45,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:15:45,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:15:45,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:15:45,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:15:45,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:15:45,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:15:45,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:15:45,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:15:45,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:15:45,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:15:45,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:15:45,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:15:45,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:15:45,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:15:45,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:15:45,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:15:45,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:15:45,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:15:45,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:15:45,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:15:45,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:15:45,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:15:45,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:15:45,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:15:45,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:15:45,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:15:45,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:15:45,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:15:45,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:15:45,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:15:45,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:15:45,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:15:45,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:15:45,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:15:45,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:15:45,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:15:45,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:15:45,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:15:45,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:15:45,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:15:45,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:15:45,159 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:15:45,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:15:45,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:15:45,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:15:45,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:15:45,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:15:45,161 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:15:45,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:15:45,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:15:45,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:15:45,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:15:45,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:15:45,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:15:45,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:15:45,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:15:45,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:15:45,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:15:45,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:15:45,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:15:45,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:15:45,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:15:45,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:15:45,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:15:45,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:15:45,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:15:45,164 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:15:45,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:15:45,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:15:45,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:15:45,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18adc7ce46ffd1a3ff82c3c7fa6ef66e3ed2399c064dd9dfbe8501509215a2b1 [2021-11-07 14:15:45,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:15:45,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:15:45,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:15:45,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:15:45,364 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:15:45,365 INFO L432 ainManager$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 [2021-11-07 14:15:45,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2587b55ec/86661757c8a34eb3b4c47ef53f31b135/FLAG0aab07412 [2021-11-07 14:15:46,045 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:15:46,046 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 [2021-11-07 14:15:46,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2587b55ec/86661757c8a34eb3b4c47ef53f31b135/FLAG0aab07412 [2021-11-07 14:15:46,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2587b55ec/86661757c8a34eb3b4c47ef53f31b135 [2021-11-07 14:15:46,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:15:46,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:15:46,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:15:46,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:15:46,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:15:46,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:46" (1/1) ... [2021-11-07 14:15:46,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d254abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:46, skipping insertion in model container [2021-11-07 14:15:46,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:46" (1/1) ... [2021-11-07 14:15:46,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:15:46,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:15:48,489 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] [2021-11-07 14:15:48,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:15:48,592 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:15:48,884 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] [2021-11-07 14:15:48,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:15:49,024 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:15:49,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49 WrapperNode [2021-11-07 14:15:49,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:15:49,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:15:49,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:15:49,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:15:49,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:49,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:52,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:15:52,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:15:52,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:15:52,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:15:52,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:52,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:53,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:53,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:54,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:54,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:55,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:55,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:15:55,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:15:55,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:15:55,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:15:55,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (1/1) ... [2021-11-07 14:15:55,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:15:56,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:15:56,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 14:15:56,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 14:15:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 14:15:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-07 14:15:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-07 14:15:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-07 14:15:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-07 14:15:56,060 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-07 14:15:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-07 14:15:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-07 14:15:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-07 14:15:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-07 14:15:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-07 14:15:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-07 14:15:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-07 14:15:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-07 14:15:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 14:15:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-07 14:15:56,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-07 14:15:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:15:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 14:15:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 14:15:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-07 14:15:56,062 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-07 14:15:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:15:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-07 14:15:56,062 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-07 14:15:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-07 14:15:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-07 14:15:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-07 14:15:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-07 14:15:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_12 [2021-11-07 14:15:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_12 [2021-11-07 14:15:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:15:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-07 14:15:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-07 14:15:56,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:15:56,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:15:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:15:56,064 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-07 14:15:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-07 14:15:56,064 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-07 14:15:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-07 14:15:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:15:56,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:15:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_11 [2021-11-07 14:15:56,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_11 [2021-11-07 14:15:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-07 14:15:56,065 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-07 14:15:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 14:15:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 14:15:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-07 14:15:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-07 14:15:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:15:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:15:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-07 14:15:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-07 14:15:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-07 14:15:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-07 14:15:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-07 14:15:56,067 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-07 14:15:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:15:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-07 14:15:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-07 14:15:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-07 14:15:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-07 14:15:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-07 14:15:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-07 14:15:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-07 14:15:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:15:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-07 14:15:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-07 14:15:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-07 14:15:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-07 14:15:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-07 14:15:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-07 14:15:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-07 14:15:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-07 14:15:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-07 14:15:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-07 14:15:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-07 14:15:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-07 14:15:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-07 14:15:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-07 14:15:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-07 14:15:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-07 14:15:56,071 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-07 14:15:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:15:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 14:16:46,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:16:46,265 INFO L299 CfgBuilder]: Removed 35674 assume(true) statements. [2021-11-07 14:16:46,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:46 BoogieIcfgContainer [2021-11-07 14:16:46,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:16:46,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:16:46,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:16:46,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:16:46,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:15:46" (1/3) ... [2021-11-07 14:16:46,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8d1286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:46, skipping insertion in model container [2021-11-07 14:16:46,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:49" (2/3) ... [2021-11-07 14:16:46,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8d1286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:46, skipping insertion in model container [2021-11-07 14:16:46,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:46" (3/3) ... [2021-11-07 14:16:46,308 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-07 14:16:46,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:16:46,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 14:16:46,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:16:46,409 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 14:16:46,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 14:16:46,783 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) [2021-11-07 14:16:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 14:16:46,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:16:46,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:16:46,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:16:46,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:16:46,805 INFO L85 PathProgramCache]: Analyzing trace with hash 112333456, now seen corresponding path program 1 times [2021-11-07 14:16:46,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:16:46,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642091077] [2021-11-07 14:16:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:16:46,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:16:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:16:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:16:47,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:16:47,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642091077] [2021-11-07 14:16:47,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642091077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:16:47,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:16:47,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:16:47,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563908426] [2021-11-07 14:16:47,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:16:47,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:16:47,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:16:47,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:16:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:16:47,437 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) [2021-11-07 14:16:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:16:48,050 INFO L93 Difference]: Finished difference Result 51608 states and 66881 transitions. [2021-11-07 14:16:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:16:48,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 14:16:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:16:48,159 INFO L225 Difference]: With dead ends: 51608 [2021-11-07 14:16:48,160 INFO L226 Difference]: Without dead ends: 25185 [2021-11-07 14:16:48,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:16:48,280 INFO L933 BasicCegarLoop]: 32680 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32680 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:16:48,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32680 Invalid, 0 Unknown, 0 Unchecked, 53.29ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:16:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2021-11-07 14:16:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 25185. [2021-11-07 14:16:49,156 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) [2021-11-07 14:16:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25185 states to 25185 states and 31442 transitions. [2021-11-07 14:16:49,244 INFO L78 Accepts]: Start accepts. Automaton has 25185 states and 31442 transitions. Word has length 76 [2021-11-07 14:16:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:16:49,244 INFO L470 AbstractCegarLoop]: Abstraction has 25185 states and 31442 transitions. [2021-11-07 14:16:49,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:16:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 25185 states and 31442 transitions. [2021-11-07 14:16:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 14:16:49,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:16:49,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:16:49,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:16:49,252 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:16:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:16:49,253 INFO L85 PathProgramCache]: Analyzing trace with hash 990491810, now seen corresponding path program 1 times [2021-11-07 14:16:49,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:16:49,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932546775] [2021-11-07 14:16:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:16:49,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:16:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:16:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:16:49,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:16:49,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932546775] [2021-11-07 14:16:49,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932546775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:16:49,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:16:49,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:16:49,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455509317] [2021-11-07 14:16:49,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:16:49,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:16:49,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:16:49,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:16:49,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:16:49,579 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) [2021-11-07 14:16:51,652 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 [] [2021-11-07 14:16:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:16:53,015 INFO L93 Difference]: Finished difference Result 75387 states and 94137 transitions. [2021-11-07 14:16:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:16:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 14:16:53,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:16:53,188 INFO L225 Difference]: With dead ends: 75387 [2021-11-07 14:16:53,189 INFO L226 Difference]: Without dead ends: 50267 [2021-11-07 14:16:53,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:16:53,249 INFO L933 BasicCegarLoop]: 31521 mSDtfsCounter, 31336 mSDsluCounter, 31411 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2081.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31336 SdHoareTripleChecker+Valid, 62932 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2198.60ms IncrementalHoareTripleChecker+Time [2021-11-07 14:16:53,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31336 Valid, 62932 Invalid, 15 Unknown, 0 Unchecked, 82.60ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2198.60ms Time] [2021-11-07 14:16:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50267 states. [2021-11-07 14:16:54,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50267 to 50263. [2021-11-07 14:16:54,274 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) [2021-11-07 14:16:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50263 states to 50263 states and 62763 transitions. [2021-11-07 14:16:54,405 INFO L78 Accepts]: Start accepts. Automaton has 50263 states and 62763 transitions. Word has length 76 [2021-11-07 14:16:54,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:16:54,407 INFO L470 AbstractCegarLoop]: Abstraction has 50263 states and 62763 transitions. [2021-11-07 14:16:54,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:16:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 50263 states and 62763 transitions. [2021-11-07 14:16:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 14:16:54,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:16:54,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:16:54,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:16:54,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_policy_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:16:54,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:16:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1067076941, now seen corresponding path program 1 times [2021-11-07 14:16:54,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:16:54,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522170660] [2021-11-07 14:16:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:16:54,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:16:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:16:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:16:54,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:16:54,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522170660] [2021-11-07 14:16:54,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522170660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:16:54,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:16:54,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:16:54,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022667807] [2021-11-07 14:16:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:16:54,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:16:54,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:16:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:16:54,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:16:54,688 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) [2021-11-07 14:16:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:16:56,365 INFO L93 Difference]: Finished difference Result 150653 states and 188302 transitions. [2021-11-07 14:16:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:16:56,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 14:16:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:16:56,696 INFO L225 Difference]: With dead ends: 150653 [2021-11-07 14:16:56,697 INFO L226 Difference]: Without dead ends: 100452 [2021-11-07 14:16:56,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:16:56,851 INFO L933 BasicCegarLoop]: 31611 mSDtfsCounter, 31357 mSDsluCounter, 31360 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31357 SdHoareTripleChecker+Valid, 62971 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.91ms IncrementalHoareTripleChecker+Time [2021-11-07 14:16:56,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31357 Valid, 62971 Invalid, 15 Unknown, 0 Unchecked, 72.21ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 34.91ms Time] [2021-11-07 14:16:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100452 states. [2021-11-07 14:16:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100452 to 100446. [2021-11-07 14:16:59,016 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) [2021-11-07 14:16:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100446 states to 100446 states and 125435 transitions. [2021-11-07 14:16:59,280 INFO L78 Accepts]: Start accepts. Automaton has 100446 states and 125435 transitions. Word has length 79 [2021-11-07 14:16:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:16:59,281 INFO L470 AbstractCegarLoop]: Abstraction has 100446 states and 125435 transitions. [2021-11-07 14:16:59,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:16:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 100446 states and 125435 transitions. [2021-11-07 14:16:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 14:16:59,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:16:59,293 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:16:59,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:16:59,294 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] === [2021-11-07 14:16:59,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:16:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2029203233, now seen corresponding path program 1 times [2021-11-07 14:16:59,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:16:59,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255366924] [2021-11-07 14:16:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:16:59,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:16:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:16:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-07 14:16:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:16:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:16:59,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:16:59,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255366924] [2021-11-07 14:16:59,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255366924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:16:59,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716224798] [2021-11-07 14:16:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:16:59,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:16:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:16:59,827 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) [2021-11-07 14:16:59,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 14:17:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:02,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 14:17:02,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:17:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:17:02,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:17:02,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716224798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:17:02,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:17:02,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-11-07 14:17:02,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819045028] [2021-11-07 14:17:02,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:17:02,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:17:02,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:17:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:17:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:17:02,561 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) [2021-11-07 14:17:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:17:04,574 INFO L93 Difference]: Finished difference Result 200939 states and 251293 transitions. [2021-11-07 14:17:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:17:04,575 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 [2021-11-07 14:17:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:17:04,994 INFO L225 Difference]: With dead ends: 200939 [2021-11-07 14:17:04,995 INFO L226 Difference]: Without dead ends: 100558 [2021-11-07 14:17:05,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.06ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:17:05,286 INFO L933 BasicCegarLoop]: 31433 mSDtfsCounter, 30 mSDsluCounter, 94278 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 125711 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.08ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.34ms IncrementalHoareTripleChecker+Time [2021-11-07 14:17:05,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 125711 Invalid, 77 Unknown, 0 Unchecked, 88.08ms Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 69.34ms Time] [2021-11-07 14:17:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100558 states. [2021-11-07 14:17:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100558 to 100558. [2021-11-07 14:17:07,172 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) [2021-11-07 14:17:07,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100558 states to 100558 states and 125555 transitions. [2021-11-07 14:17:07,424 INFO L78 Accepts]: Start accepts. Automaton has 100558 states and 125555 transitions. Word has length 106 [2021-11-07 14:17:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:17:07,425 INFO L470 AbstractCegarLoop]: Abstraction has 100558 states and 125555 transitions. [2021-11-07 14:17:07,425 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) [2021-11-07 14:17:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 100558 states and 125555 transitions. [2021-11-07 14:17:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 14:17:07,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:17:07,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:17:07,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 14:17:07,655 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 [2021-11-07 14:17:07,655 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] === [2021-11-07 14:17:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:17:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash -369294790, now seen corresponding path program 1 times [2021-11-07 14:17:07,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:17:07,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746631483] [2021-11-07 14:17:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:17:07,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:17:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-07 14:17:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:17:08,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:17:08,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746631483] [2021-11-07 14:17:08,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746631483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:17:08,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:17:08,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:17:08,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414122242] [2021-11-07 14:17:08,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:17:08,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:17:08,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:17:08,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:17:08,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:17:08,191 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) [2021-11-07 14:17:10,239 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 [] [2021-11-07 14:17:24,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:17:26,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:17:31,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:17:39,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:17:44,195 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 [] [2021-11-07 14:17:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:17:53,680 INFO L93 Difference]: Finished difference Result 234455 states and 293543 transitions. [2021-11-07 14:17:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:17:53,681 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 [2021-11-07 14:17:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:17:54,163 INFO L225 Difference]: With dead ends: 234455 [2021-11-07 14:17:54,163 INFO L226 Difference]: Without dead ends: 133962 [2021-11-07 14:17:54,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:17:54,415 INFO L933 BasicCegarLoop]: 33522 mSDtfsCounter, 11472 mSDsluCounter, 52220 mSDsCounter, 0 mSdLazyCounter, 13474 mSolverCounterSat, 365 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37581.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11482 SdHoareTripleChecker+Valid, 85742 SdHoareTripleChecker+Invalid, 13843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 186.36ms SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 13474 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42054.01ms IncrementalHoareTripleChecker+Time [2021-11-07 14:17:54,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11482 Valid, 85742 Invalid, 13843 Unknown, 0 Unchecked, 186.36ms Time], IncrementalHoareTripleChecker [365 Valid, 13474 Invalid, 4 Unknown, 0 Unchecked, 42054.01ms Time] [2021-11-07 14:17:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133962 states. [2021-11-07 14:17:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133962 to 128506. [2021-11-07 14:17:57,168 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) [2021-11-07 14:17:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128506 states to 128506 states and 160703 transitions. [2021-11-07 14:17:57,527 INFO L78 Accepts]: Start accepts. Automaton has 128506 states and 160703 transitions. Word has length 114 [2021-11-07 14:17:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:17:57,528 INFO L470 AbstractCegarLoop]: Abstraction has 128506 states and 160703 transitions. [2021-11-07 14:17:57,528 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) [2021-11-07 14:17:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 128506 states and 160703 transitions. [2021-11-07 14:17:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 14:17:57,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:17:57,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:17:57,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:17:57,534 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] === [2021-11-07 14:17:57,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:17:57,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1329452238, now seen corresponding path program 1 times [2021-11-07 14:17:57,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:17:57,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095460549] [2021-11-07 14:17:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:17:57,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:17:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-07 14:17:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-07 14:17:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:17:58,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:17:58,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095460549] [2021-11-07 14:17:58,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095460549] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:17:58,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628575581] [2021-11-07 14:17:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:17:58,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:17:58,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:17:58,313 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) [2021-11-07 14:17:58,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 14:18:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:18:00,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 3694 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 14:18:00,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:18:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:18:00,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:18:00,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628575581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:18:00,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:18:00,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-07 14:18:00,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974469137] [2021-11-07 14:18:00,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:18:00,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:18:00,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:18:00,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:18:00,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-07 14:18:00,766 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) [2021-11-07 14:18:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:18:03,571 INFO L93 Difference]: Finished difference Result 257211 states and 322357 transitions. [2021-11-07 14:18:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 14:18:03,572 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 [2021-11-07 14:18:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:18:03,967 INFO L225 Difference]: With dead ends: 257211 [2021-11-07 14:18:03,968 INFO L226 Difference]: Without dead ends: 128770 [2021-11-07 14:18:04,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 154.69ms TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-07 14:18:04,391 INFO L933 BasicCegarLoop]: 31431 mSDtfsCounter, 34 mSDsluCounter, 94279 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 125710 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.37ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.63ms IncrementalHoareTripleChecker+Time [2021-11-07 14:18:04,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 125710 Invalid, 98 Unknown, 0 Unchecked, 48.37ms Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 139.63ms Time] [2021-11-07 14:18:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128770 states. [2021-11-07 14:18:06,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128770 to 128754. [2021-11-07 14:18:07,179 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) [2021-11-07 14:18:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128754 states to 128754 states and 161015 transitions. [2021-11-07 14:18:07,548 INFO L78 Accepts]: Start accepts. Automaton has 128754 states and 161015 transitions. Word has length 118 [2021-11-07 14:18:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:18:07,548 INFO L470 AbstractCegarLoop]: Abstraction has 128754 states and 161015 transitions. [2021-11-07 14:18:07,548 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) [2021-11-07 14:18:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 128754 states and 161015 transitions. [2021-11-07 14:18:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 14:18:07,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:18:07,569 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:18:07,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 14:18:07,783 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 [2021-11-07 14:18:07,784 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] === [2021-11-07 14:18:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:18:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash -444455622, now seen corresponding path program 1 times [2021-11-07 14:18:07,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:18:07,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272516715] [2021-11-07 14:18:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:18:07,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:18:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:18:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-07 14:18:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:18:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:18:08,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:18:08,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272516715] [2021-11-07 14:18:08,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272516715] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:18:08,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868294139] [2021-11-07 14:18:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:18:08,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:18:08,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:18:08,039 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) [2021-11-07 14:18:08,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 14:18:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:18:10,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 14:18:10,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:18:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:18:10,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:18:10,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868294139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:18:10,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:18:10,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 14:18:10,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115909334] [2021-11-07 14:18:10,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:18:10,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:18:10,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:18:10,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:18:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:18:10,864 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)