./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c5e11c32abc44e06be1403f1da490e5e9ddc476b4dd1edb72148385c1e2a0b21 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:50:06,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:50:06,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:50:06,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:50:06,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:50:06,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:50:06,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:50:06,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:50:06,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:50:06,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:50:06,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:50:06,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:50:06,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:50:07,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:50:07,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:50:07,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:50:07,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:50:07,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:50:07,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:50:07,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:50:07,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:50:07,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:50:07,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:50:07,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:50:07,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:50:07,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:50:07,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:50:07,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:50:07,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:50:07,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:50:07,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:50:07,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:50:07,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:50:07,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:50:07,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:50:07,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:50:07,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:50:07,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:50:07,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:50:07,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:50:07,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:50:07,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:50:07,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:50:07,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:50:07,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:50:07,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:50:07,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:50:07,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:50:07,114 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:50:07,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:50:07,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:50:07,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:50:07,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:50:07,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:50:07,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:50:07,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:50:07,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:50:07,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:50:07,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:50:07,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:50:07,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:50:07,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:50:07,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:50:07,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:50:07,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:50:07,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:50:07,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:50:07,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:50:07,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:50:07,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:50:07,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:50:07,122 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e11c32abc44e06be1403f1da490e5e9ddc476b4dd1edb72148385c1e2a0b21 [2021-11-02 22:50:07,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:50:07,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:50:07,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:50:07,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:50:07,424 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:50:07,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-02 22:50:07,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/data/37b32133b/81aa358038fb4ff4b1b6ecfb09f60e5c/FLAGab765f49a [2021-11-02 22:50:08,552 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:50:08,552 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-02 22:50:08,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/data/37b32133b/81aa358038fb4ff4b1b6ecfb09f60e5c/FLAGab765f49a [2021-11-02 22:50:08,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/data/37b32133b/81aa358038fb4ff4b1b6ecfb09f60e5c [2021-11-02 22:50:08,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:50:08,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:50:08,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:50:08,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:50:08,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:50:08,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:50:08" (1/1) ... [2021-11-02 22:50:08,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b42c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:08, skipping insertion in model container [2021-11-02 22:50:08,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:50:08" (1/1) ... [2021-11-02 22:50:08,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:50:09,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:50:13,236 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i[382358,382371] [2021-11-02 22:50:13,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:50:13,533 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:50:14,013 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i[382358,382371] [2021-11-02 22:50:14,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:50:14,394 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:50:14,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14 WrapperNode [2021-11-02 22:50:14,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:50:14,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:50:14,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:50:14,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:50:14,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:14,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:19,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:50:19,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:50:19,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:50:19,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:50:19,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:19,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:20,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:20,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:23,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:24,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:24,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:25,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:50:25,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:50:25,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:50:25,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:50:25,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (1/1) ... [2021-11-02 22:50:25,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:50:25,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:50:25,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:50:25,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc1068d8-cd2b-491c-b909-3324cc65ba51/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:50:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:50:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-02 22:50:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-02 22:50:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-02 22:50:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-02 22:50:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-02 22:50:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-02 22:50:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-02 22:50:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-02 22:50:25,254 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-02 22:50:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-02 22:50:25,254 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-02 22:50:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-02 22:50:25,254 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-02 22:50:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 22:50:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-02 22:50:25,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-02 22:50:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:50:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:50:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:50:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-02 22:50:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-02 22:50:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:50:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-02 22:50:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-02 22:50:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-02 22:50:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-02 22:50:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-02 22:50:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-02 22:50:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_19 [2021-11-02 22:50:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_19 [2021-11-02 22:50:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:50:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-02 22:50:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-02 22:50:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:50:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:50:25,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:50:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-02 22:50:25,258 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-02 22:50:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-02 22:50:25,259 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-02 22:50:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:50:25,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:50:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-02 22:50:25,259 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-02 22:50:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:50:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:50:25,260 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-02 22:50:25,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-02 22:50:25,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_18 [2021-11-02 22:50:25,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_18 [2021-11-02 22:50:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:50:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:50:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-02 22:50:25,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-02 22:50:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-02 22:50:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-02 22:50:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-02 22:50:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-02 22:50:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:50:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-02 22:50:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-02 22:50:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-02 22:50:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-02 22:50:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-02 22:50:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-02 22:50:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-02 22:50:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:50:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-02 22:50:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-02 22:50:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-02 22:50:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-02 22:50:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-02 22:50:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-02 22:50:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-02 22:50:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-02 22:50:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-02 22:50:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-02 22:50:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-02 22:50:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-02 22:50:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-02 22:50:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-02 22:50:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-02 22:50:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-02 22:50:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-02 22:50:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:50:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:51:40,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:51:40,904 INFO L299 CfgBuilder]: Removed 35706 assume(true) statements. [2021-11-02 22:51:40,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:51:40 BoogieIcfgContainer [2021-11-02 22:51:40,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:51:40,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:51:40,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:51:40,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:51:40,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:50:08" (1/3) ... [2021-11-02 22:51:40,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e98f528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:51:40, skipping insertion in model container [2021-11-02 22:51:40,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:50:14" (2/3) ... [2021-11-02 22:51:40,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e98f528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:51:40, skipping insertion in model container [2021-11-02 22:51:40,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:51:40" (3/3) ... [2021-11-02 22:51:40,940 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-02 22:51:40,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:51:40,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 22:51:41,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:51:41,098 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 22:51:41,099 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 22:51:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 25832 states, 25705 states have (on average 1.2941451079556507) internal successors, (33266), 25733 states have internal predecessors, (33266), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-02 22:51:41,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:51:41,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:41,451 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:51:41,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:51:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1542594832, now seen corresponding path program 1 times [2021-11-02 22:51:41,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:41,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060953657] [2021-11-02 22:51:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:41,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:42,283 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 22:51:42,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:42,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060953657] [2021-11-02 22:51:42,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060953657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:42,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:42,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:51:42,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712815186] [2021-11-02 22:51:42,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:51:42,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:51:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:51:42,382 INFO L87 Difference]: Start difference. First operand has 25832 states, 25705 states have (on average 1.2941451079556507) internal successors, (33266), 25733 states have internal predecessors, (33266), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:43,609 INFO L93 Difference]: Finished difference Result 51660 states and 66937 transitions. [2021-11-02 22:51:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:51:43,617 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 22:51:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:43,797 INFO L225 Difference]: With dead ends: 51660 [2021-11-02 22:51:43,798 INFO L226 Difference]: Without dead ends: 25211 [2021-11-02 22:51:43,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:51:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25211 states. [2021-11-02 22:51:44,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25211 to 25211. [2021-11-02 22:51:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25211 states, 25085 states have (on average 1.247677895156468) internal successors, (31298), 25112 states have internal predecessors, (31298), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-02 22:51:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25211 states to 25211 states and 31462 transitions. [2021-11-02 22:51:45,121 INFO L78 Accepts]: Start accepts. Automaton has 25211 states and 31462 transitions. Word has length 76 [2021-11-02 22:51:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:45,121 INFO L470 AbstractCegarLoop]: Abstraction has 25211 states and 31462 transitions. [2021-11-02 22:51:45,122 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 22:51:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 25211 states and 31462 transitions. [2021-11-02 22:51:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:51:45,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:45,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:51:45,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:51:45,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:51:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1874214110, now seen corresponding path program 1 times [2021-11-02 22:51:45,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:45,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939427290] [2021-11-02 22:51:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:45,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:45,504 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 22:51:45,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:45,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939427290] [2021-11-02 22:51:45,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939427290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:45,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:45,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:51:45,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364856002] [2021-11-02 22:51:45,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:51:45,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:51:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:45,508 INFO L87 Difference]: Start difference. First operand 25211 states and 31462 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:46,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:46,466 INFO L93 Difference]: Finished difference Result 50389 states and 62897 transitions. [2021-11-02 22:51:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:51:46,467 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 22:51:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:46,596 INFO L225 Difference]: With dead ends: 50389 [2021-11-02 22:51:46,597 INFO L226 Difference]: Without dead ends: 25218 [2021-11-02 22:51:46,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:46,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25218 states. [2021-11-02 22:51:47,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25218 to 25218. [2021-11-02 22:51:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25218 states, 25092 states have (on average 1.247608799617408) internal successors, (31305), 25119 states have internal predecessors, (31305), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-02 22:51:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25218 states to 25218 states and 31469 transitions. [2021-11-02 22:51:47,561 INFO L78 Accepts]: Start accepts. Automaton has 25218 states and 31469 transitions. Word has length 76 [2021-11-02 22:51:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:47,562 INFO L470 AbstractCegarLoop]: Abstraction has 25218 states and 31469 transitions. [2021-11-02 22:51:47,562 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 22:51:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 25218 states and 31469 transitions. [2021-11-02 22:51:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:51:47,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:47,564 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:51:47,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:51:47,564 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:51:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash -534836220, now seen corresponding path program 1 times [2021-11-02 22:51:47,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:47,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240904256] [2021-11-02 22:51:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:47,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:47,923 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 22:51:47,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:47,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240904256] [2021-11-02 22:51:47,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240904256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:47,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:47,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:51:47,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033697629] [2021-11-02 22:51:47,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:51:47,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:51:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:47,926 INFO L87 Difference]: Start difference. First operand 25218 states and 31469 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:48,910 INFO L93 Difference]: Finished difference Result 50383 states and 62883 transitions. [2021-11-02 22:51:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:51:48,911 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 22:51:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:49,003 INFO L225 Difference]: With dead ends: 50383 [2021-11-02 22:51:49,004 INFO L226 Difference]: Without dead ends: 25221 [2021-11-02 22:51:49,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25221 states. [2021-11-02 22:51:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25221 to 25221. [2021-11-02 22:51:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25221 states, 25095 states have (on average 1.2475791990436342) internal successors, (31308), 25122 states have internal predecessors, (31308), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-02 22:51:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25221 states to 25221 states and 31472 transitions. [2021-11-02 22:51:49,911 INFO L78 Accepts]: Start accepts. Automaton has 25221 states and 31472 transitions. Word has length 83 [2021-11-02 22:51:49,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:49,912 INFO L470 AbstractCegarLoop]: Abstraction has 25221 states and 31472 transitions. [2021-11-02 22:51:49,912 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 22:51:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 25221 states and 31472 transitions. [2021-11-02 22:51:49,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:51:49,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:49,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:51:49,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:51:49,916 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:51:49,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:49,917 INFO L85 PathProgramCache]: Analyzing trace with hash 785484330, now seen corresponding path program 1 times [2021-11-02 22:51:49,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:49,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077670990] [2021-11-02 22:51:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:49,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:50,288 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 22:51:50,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:50,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077670990] [2021-11-02 22:51:50,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077670990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:50,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:50,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:51:50,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591971187] [2021-11-02 22:51:50,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:51:50,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:51:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:50,301 INFO L87 Difference]: Start difference. First operand 25221 states and 31472 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:54,157 INFO L93 Difference]: Finished difference Result 75470 states and 94202 transitions. [2021-11-02 22:51:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:51:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 22:51:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:54,361 INFO L225 Difference]: With dead ends: 75470 [2021-11-02 22:51:54,363 INFO L226 Difference]: Without dead ends: 50322 [2021-11-02 22:51:54,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50322 states. [2021-11-02 22:51:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50322 to 50308. [2021-11-02 22:51:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 50067 states have (on average 1.2477879641280685) internal successors, (62473), 50111 states have internal predecessors, (62473), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-02 22:51:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 62801 transitions. [2021-11-02 22:51:56,055 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 62801 transitions. Word has length 84 [2021-11-02 22:51:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:56,058 INFO L470 AbstractCegarLoop]: Abstraction has 50308 states and 62801 transitions. [2021-11-02 22:51:56,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 62801 transitions. [2021-11-02 22:51:56,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:51:56,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:56,064 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:51:56,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:51:56,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:51:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1001384947, now seen corresponding path program 1 times [2021-11-02 22:51:56,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:56,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815146693] [2021-11-02 22:51:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:56,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:56,839 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 22:51:56,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:56,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815146693] [2021-11-02 22:51:56,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815146693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:56,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:56,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:51:56,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066608164] [2021-11-02 22:51:56,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:51:56,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:51:56,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:56,842 INFO L87 Difference]: Start difference. First operand 50308 states and 62801 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:57,958 INFO L93 Difference]: Finished difference Result 50308 states and 62801 transitions. [2021-11-02 22:51:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:51:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 22:51:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:58,105 INFO L225 Difference]: With dead ends: 50308 [2021-11-02 22:51:58,105 INFO L226 Difference]: Without dead ends: 50306 [2021-11-02 22:51:58,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50306 states. [2021-11-02 22:51:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50306 to 50306. [2021-11-02 22:51:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50306 states, 50066 states have (on average 1.2477729397195703) internal successors, (62471), 50109 states have internal predecessors, (62471), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-02 22:51:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50306 states to 50306 states and 62799 transitions. [2021-11-02 22:51:59,429 INFO L78 Accepts]: Start accepts. Automaton has 50306 states and 62799 transitions. Word has length 87 [2021-11-02 22:51:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:59,431 INFO L470 AbstractCegarLoop]: Abstraction has 50306 states and 62799 transitions. [2021-11-02 22:51:59,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 50306 states and 62799 transitions. [2021-11-02 22:51:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:51:59,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:59,437 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:51:59,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:51:59,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:51:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash -978078217, now seen corresponding path program 1 times [2021-11-02 22:51:59,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:59,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109301289] [2021-11-02 22:51:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:59,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:59,820 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 22:51:59,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:59,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109301289] [2021-11-02 22:51:59,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109301289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:59,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:59,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:51:59,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379833962] [2021-11-02 22:51:59,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:51:59,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:59,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:51:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:59,825 INFO L87 Difference]: Start difference. First operand 50306 states and 62799 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 22:52:01,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:01,518 INFO L93 Difference]: Finished difference Result 50306 states and 62799 transitions. [2021-11-02 22:52:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:52:01,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2021-11-02 22:52:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:01,689 INFO L225 Difference]: With dead ends: 50306 [2021-11-02 22:52:01,689 INFO L226 Difference]: Without dead ends: 50304 [2021-11-02 22:52:01,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50304 states. [2021-11-02 22:52:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50304 to 50304. [2021-11-02 22:52:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50304 states, 50065 states have (on average 1.247757914710876) internal successors, (62469), 50107 states have internal predecessors, (62469), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-02 22:52:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50304 states to 50304 states and 62797 transitions. [2021-11-02 22:52:03,247 INFO L78 Accepts]: Start accepts. Automaton has 50304 states and 62797 transitions. Word has length 88 [2021-11-02 22:52:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:03,247 INFO L470 AbstractCegarLoop]: Abstraction has 50304 states and 62797 transitions. [2021-11-02 22:52:03,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 22:52:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 50304 states and 62797 transitions. [2021-11-02 22:52:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:52:03,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:03,250 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:03,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:52:03,250 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:52:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -255569577, now seen corresponding path program 1 times [2021-11-02 22:52:03,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:03,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117604277] [2021-11-02 22:52:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:03,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:03,998 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 22:52:03,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:03,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117604277] [2021-11-02 22:52:03,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117604277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:03,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:03,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:52:03,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791315331] [2021-11-02 22:52:04,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:52:04,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:52:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:04,001 INFO L87 Difference]: Start difference. First operand 50304 states and 62797 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 22:52:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:05,441 INFO L93 Difference]: Finished difference Result 50304 states and 62797 transitions. [2021-11-02 22:52:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:52:05,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 89 [2021-11-02 22:52:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:05,593 INFO L225 Difference]: With dead ends: 50304 [2021-11-02 22:52:05,593 INFO L226 Difference]: Without dead ends: 50302 [2021-11-02 22:52:05,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:05,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50302 states. [2021-11-02 22:52:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50302 to 50302. [2021-11-02 22:52:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50302 states, 50064 states have (on average 1.2477428891019495) internal successors, (62467), 50105 states have internal predecessors, (62467), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-02 22:52:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50302 states to 50302 states and 62795 transitions. [2021-11-02 22:52:07,493 INFO L78 Accepts]: Start accepts. Automaton has 50302 states and 62795 transitions. Word has length 89 [2021-11-02 22:52:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:07,493 INFO L470 AbstractCegarLoop]: Abstraction has 50302 states and 62795 transitions. [2021-11-02 22:52:07,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 22:52:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 50302 states and 62795 transitions. [2021-11-02 22:52:07,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 22:52:07,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:07,497 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:07,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:52:07,497 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:52:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 667361793, now seen corresponding path program 1 times [2021-11-02 22:52:07,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:07,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772095437] [2021-11-02 22:52:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:07,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:07,885 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 22:52:07,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:07,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772095437] [2021-11-02 22:52:07,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772095437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:07,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:07,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:52:07,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228630623] [2021-11-02 22:52:07,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:52:07,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:07,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:52:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:07,888 INFO L87 Difference]: Start difference. First operand 50302 states and 62795 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 22:52:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:09,683 INFO L93 Difference]: Finished difference Result 50302 states and 62795 transitions. [2021-11-02 22:52:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:52:09,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2021-11-02 22:52:09,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:09,802 INFO L225 Difference]: With dead ends: 50302 [2021-11-02 22:52:09,802 INFO L226 Difference]: Without dead ends: 50288 [2021-11-02 22:52:09,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50288 states. [2021-11-02 22:52:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50288 to 50288. [2021-11-02 22:52:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50288 states, 50054 states have (on average 1.2476325568386144) internal successors, (62449), 50091 states have internal predecessors, (62449), 164 states have call successors, (164), 66 states have call predecessors, (164), 66 states have return successors, (164), 152 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-02 22:52:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50288 states to 50288 states and 62777 transitions. [2021-11-02 22:52:11,902 INFO L78 Accepts]: Start accepts. Automaton has 50288 states and 62777 transitions. Word has length 90 [2021-11-02 22:52:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:11,902 INFO L470 AbstractCegarLoop]: Abstraction has 50288 states and 62777 transitions. [2021-11-02 22:52:11,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 22:52:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 50288 states and 62777 transitions. [2021-11-02 22:52:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 22:52:11,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:11,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:11,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:52:11,915 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:52:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash -500308828, now seen corresponding path program 1 times [2021-11-02 22:52:11,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:11,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043539808] [2021-11-02 22:52:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:11,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:12,193 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 22:52:12,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:12,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043539808] [2021-11-02 22:52:12,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043539808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:12,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:12,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:52:12,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661218998] [2021-11-02 22:52:12,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:52:12,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:52:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:12,196 INFO L87 Difference]: Start difference. First operand 50288 states and 62777 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:15,441 INFO L93 Difference]: Finished difference Result 114448 states and 143014 transitions. [2021-11-02 22:52:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:52:15,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-02 22:52:15,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:15,635 INFO L225 Difference]: With dead ends: 114448 [2021-11-02 22:52:15,635 INFO L226 Difference]: Without dead ends: 64233 [2021-11-02 22:52:15,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:15,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64233 states. [2021-11-02 22:52:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64233 to 64218. [2021-11-02 22:52:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64218 states, 63794 states have (on average 1.2497256795309903) internal successors, (79725), 63865 states have internal predecessors, (79725), 288 states have call successors, (288), 132 states have call predecessors, (288), 132 states have return successors, (288), 264 states have call predecessors, (288), 288 states have call successors, (288) [2021-11-02 22:52:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64218 states to 64218 states and 80301 transitions. [2021-11-02 22:52:18,176 INFO L78 Accepts]: Start accepts. Automaton has 64218 states and 80301 transitions. Word has length 110 [2021-11-02 22:52:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:18,177 INFO L470 AbstractCegarLoop]: Abstraction has 64218 states and 80301 transitions. [2021-11-02 22:52:18,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 64218 states and 80301 transitions. [2021-11-02 22:52:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-02 22:52:18,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:18,192 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:18,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:52:18,192 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 22:52:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1032347844, now seen corresponding path program 1 times [2021-11-02 22:52:18,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:18,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32448667] [2021-11-02 22:52:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:18,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:18,783 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 22:52:18,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:18,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32448667] [2021-11-02 22:52:18,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32448667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:18,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:18,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:52:18,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731702837] [2021-11-02 22:52:18,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:52:18,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:18,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:52:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:18,786 INFO L87 Difference]: Start difference. First operand 64218 states and 80301 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)