./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 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/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_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G --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-7e70bad [2021-11-23 14:12:53,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:12:53,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:12:53,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:12:53,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:12:53,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:12:53,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:12:53,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:12:53,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:12:53,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:12:53,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:12:53,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:12:53,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:12:53,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:12:53,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:12:53,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:12:53,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:12:53,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:12:53,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:12:53,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:12:53,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:12:53,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:12:53,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:12:53,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:12:53,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:12:53,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:12:53,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:12:53,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:12:53,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:12:53,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:12:53,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:12:53,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:12:53,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:12:53,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:12:53,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:12:53,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:12:53,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:12:53,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:12:53,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:12:53,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:12:53,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:12:53,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 14:12:53,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:12:53,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:12:53,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:12:53,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:12:53,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:12:53,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:12:53,674 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:12:53,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:12:53,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:12:53,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:12:53,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:12:53,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:12:53,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:12:53,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:12:53,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:12:53,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:12:53,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:12:53,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:12:53,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:12:53,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:12:53,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:12:53,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:12:53,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:12:53,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:12:53,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:12:53,681 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:12:53,681 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:12:53,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:12:53,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:12:53,684 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_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e11c32abc44e06be1403f1da490e5e9ddc476b4dd1edb72148385c1e2a0b21 [2021-11-23 14:12:54,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:12:54,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:12:54,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:12:54,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:12:54,173 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:12:54,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/../../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 [2021-11-23 14:12:54,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/data/79102ba6a/4a9bbc65bb6e46a395bad865c30f6de3/FLAG6f2b86c61 [2021-11-23 14:12:55,454 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:12:55,455 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/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 [2021-11-23 14:12:55,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/data/79102ba6a/4a9bbc65bb6e46a395bad865c30f6de3/FLAG6f2b86c61 [2021-11-23 14:12:55,737 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/data/79102ba6a/4a9bbc65bb6e46a395bad865c30f6de3 [2021-11-23 14:12:55,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:12:55,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:12:55,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:12:55,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:12:55,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:12:55,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:12:55" (1/1) ... [2021-11-23 14:12:55,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3428f753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:55, skipping insertion in model container [2021-11-23 14:12:55,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:12:55" (1/1) ... [2021-11-23 14:12:55,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:12:55,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:13:01,118 WARN L230 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_b7002b35-6678-4c52-b988-d7062d838df7/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] [2021-11-23 14:13:01,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:13:01,541 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:13:02,163 WARN L230 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_b7002b35-6678-4c52-b988-d7062d838df7/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] [2021-11-23 14:13:02,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:13:02,568 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:13:02,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02 WrapperNode [2021-11-23 14:13:02,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:13:02,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:13:02,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:13:02,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:13:02,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:02,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:07,844 INFO L137 Inliner]: procedures = 664, calls = 4061, calls flagged for inlining = 1517, calls inlined = 17887, statements flattened = 169507 [2021-11-23 14:13:07,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:13:07,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:13:07,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:13:07,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:13:07,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:07,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:08,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:08,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:12,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:12,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:12,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:13,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:13:13,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:13:13,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:13:13,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:13:13,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (1/1) ... [2021-11-23 14:13:13,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:13:13,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:13:13,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:13:13,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7002b35-6678-4c52-b988-d7062d838df7/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:13:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-23 14:13:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-23 14:13:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-23 14:13:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-23 14:13:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-23 14:13:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-23 14:13:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-23 14:13:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-23 14:13:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-23 14:13:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-23 14:13:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-23 14:13:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-23 14:13:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-23 14:13:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-23 14:13:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 14:13:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-23 14:13:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-23 14:13:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 14:13:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 14:13:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 14:13:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-23 14:13:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-23 14:13:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:13:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-23 14:13:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-23 14:13:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-23 14:13:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-23 14:13:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-23 14:13:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-23 14:13:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_19 [2021-11-23 14:13:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_19 [2021-11-23 14:13:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 14:13:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:13:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-23 14:13:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-23 14:13:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 14:13:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 14:13:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 14:13:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-23 14:13:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-23 14:13:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-23 14:13:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-23 14:13:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:13:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:13:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-23 14:13:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-23 14:13:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 14:13:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 14:13:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-23 14:13:13,755 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-23 14:13:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_18 [2021-11-23 14:13:13,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_18 [2021-11-23 14:13:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 14:13:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 14:13:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-23 14:13:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-23 14:13:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-23 14:13:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-23 14:13:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-23 14:13:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-23 14:13:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 14:13:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-23 14:13:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-23 14:13:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-23 14:13:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-23 14:13:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-23 14:13:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-23 14:13:13,759 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-23 14:13:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:13:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-23 14:13:13,759 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-23 14:13:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-23 14:13:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-23 14:13:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-23 14:13:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-23 14:13:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-23 14:13:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-23 14:13:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-23 14:13:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-23 14:13:13,761 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-23 14:13:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-23 14:13:13,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-23 14:13:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-23 14:13:13,762 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-23 14:13:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-23 14:13:13,762 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-23 14:13:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:13:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 14:13:16,803 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:13:16,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:14:29,094 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:14:29,231 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:14:29,231 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 14:14:29,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:29 BoogieIcfgContainer [2021-11-23 14:14:29,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:14:29,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:14:29,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:14:29,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:14:29,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:12:55" (1/3) ... [2021-11-23 14:14:29,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67517824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:29, skipping insertion in model container [2021-11-23 14:14:29,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:02" (2/3) ... [2021-11-23 14:14:29,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67517824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:29, skipping insertion in model container [2021-11-23 14:14:29,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:29" (3/3) ... [2021-11-23 14:14:29,272 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-23 14:14:29,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:14:29,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-23 14:14:29,429 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:14:29,436 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 [2021-11-23 14:14:29,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-23 14:14:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 28903 states, 28776 states have (on average 1.2627536836252433) internal successors, (36337), 28804 states have internal predecessors, (36337), 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) [2021-11-23 14:14:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 14:14:30,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:30,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:14:30,006 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)] === [2021-11-23 14:14:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2036704971, now seen corresponding path program 1 times [2021-11-23 14:14:30,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:30,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099129008] [2021-11-23 14:14:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:30,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:14:30,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:30,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099129008] [2021-11-23 14:14:30,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099129008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:30,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:30,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:30,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725529204] [2021-11-23 14:14:30,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:30,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 14:14:30,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:30,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 14:14:30,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:14:30,789 INFO L87 Difference]: Start difference. First operand has 28903 states, 28776 states have (on average 1.2627536836252433) internal successors, (36337), 28804 states have internal predecessors, (36337), 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 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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) [2021-11-23 14:14:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:32,373 INFO L93 Difference]: Finished difference Result 57791 states and 73068 transitions. [2021-11-23 14:14:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:14:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 78 [2021-11-23 14:14:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:32,618 INFO L225 Difference]: With dead ends: 57791 [2021-11-23 14:14:32,618 INFO L226 Difference]: Without dead ends: 28271 [2021-11-23 14:14:32,781 INFO L932 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 [2021-11-23 14:14:32,787 INFO L933 BasicCegarLoop]: 35760 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35760 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:32,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35760 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:14:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28271 states. [2021-11-23 14:14:33,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28271 to 28271. [2021-11-23 14:14:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28271 states, 28145 states have (on average 1.2207496891099663) internal successors, (34358), 28172 states have internal predecessors, (34358), 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) [2021-11-23 14:14:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28271 states to 28271 states and 34522 transitions. [2021-11-23 14:14:33,902 INFO L78 Accepts]: Start accepts. Automaton has 28271 states and 34522 transitions. Word has length 78 [2021-11-23 14:14:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:33,903 INFO L470 AbstractCegarLoop]: Abstraction has 28271 states and 34522 transitions. [2021-11-23 14:14:33,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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) [2021-11-23 14:14:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 28271 states and 34522 transitions. [2021-11-23 14:14:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 14:14:33,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:33,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:14:33,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:14:33,918 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)] === [2021-11-23 14:14:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash -161674147, now seen corresponding path program 1 times [2021-11-23 14:14:33,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:33,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93834681] [2021-11-23 14:14:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:33,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:14:34,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:34,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93834681] [2021-11-23 14:14:34,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93834681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:34,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:34,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:14:34,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812131022] [2021-11-23 14:14:34,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:34,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:34,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:34,574 INFO L87 Difference]: Start difference. First operand 28271 states and 34522 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-23 14:14:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:36,839 INFO L93 Difference]: Finished difference Result 84633 states and 103365 transitions. [2021-11-23 14:14:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-23 14:14:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:37,133 INFO L225 Difference]: With dead ends: 84633 [2021-11-23 14:14:37,133 INFO L226 Difference]: Without dead ends: 56427 [2021-11-23 14:14:37,246 INFO L932 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 [2021-11-23 14:14:37,247 INFO L933 BasicCegarLoop]: 34601 mSDtfsCounter, 34404 mSDsluCounter, 34491 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34404 SdHoareTripleChecker+Valid, 69092 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:37,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34404 Valid, 69092 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:14:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56427 states. [2021-11-23 14:14:39,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56427 to 56413. [2021-11-23 14:14:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56413 states, 56172 states have (on average 1.2208573666595457) internal successors, (68578), 56216 states have internal predecessors, (68578), 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) [2021-11-23 14:14:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56413 states to 56413 states and 68906 transitions. [2021-11-23 14:14:39,390 INFO L78 Accepts]: Start accepts. Automaton has 56413 states and 68906 transitions. Word has length 78 [2021-11-23 14:14:39,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:39,392 INFO L470 AbstractCegarLoop]: Abstraction has 56413 states and 68906 transitions. [2021-11-23 14:14:39,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-23 14:14:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 56413 states and 68906 transitions. [2021-11-23 14:14:39,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 14:14:39,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:39,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:14:39,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:14:39,399 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)] === [2021-11-23 14:14:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1218527851, now seen corresponding path program 1 times [2021-11-23 14:14:39,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:39,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222002304] [2021-11-23 14:14:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:39,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:14:39,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:39,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222002304] [2021-11-23 14:14:39,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222002304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:39,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:39,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:39,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854417928] [2021-11-23 14:14:39,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:39,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:39,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:39,787 INFO L87 Difference]: Start difference. First operand 56413 states and 68906 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-23 14:14:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:41,419 INFO L93 Difference]: Finished difference Result 56413 states and 68906 transitions. [2021-11-23 14:14:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:41,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-11-23 14:14:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:41,582 INFO L225 Difference]: With dead ends: 56413 [2021-11-23 14:14:41,583 INFO L226 Difference]: Without dead ends: 56411 [2021-11-23 14:14:41,819 INFO L932 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 [2021-11-23 14:14:41,823 INFO L933 BasicCegarLoop]: 34519 mSDtfsCounter, 34442 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34442 SdHoareTripleChecker+Valid, 34519 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:41,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34442 Valid, 34519 Invalid, 1 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:14:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56411 states. [2021-11-23 14:14:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56411 to 56411. [2021-11-23 14:14:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56411 states, 56171 states have (on average 1.2208434957540368) internal successors, (68576), 56214 states have internal predecessors, (68576), 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) [2021-11-23 14:14:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56411 states to 56411 states and 68904 transitions. [2021-11-23 14:14:43,649 INFO L78 Accepts]: Start accepts. Automaton has 56411 states and 68904 transitions. Word has length 80 [2021-11-23 14:14:43,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:43,651 INFO L470 AbstractCegarLoop]: Abstraction has 56411 states and 68904 transitions. [2021-11-23 14:14:43,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-23 14:14:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 56411 states and 68904 transitions. [2021-11-23 14:14:43,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 14:14:43,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:43,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:14:43,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:14:43,656 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-23 14:14:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash -880254155, now seen corresponding path program 1 times [2021-11-23 14:14:43,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:43,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951993850] [2021-11-23 14:14:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:43,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:14:44,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:44,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951993850] [2021-11-23 14:14:44,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951993850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:44,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:44,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:44,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6315173] [2021-11-23 14:14:44,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:44,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:44,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:44,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:44,275 INFO L87 Difference]: Start difference. First operand 56411 states and 68904 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-23 14:14:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:45,763 INFO L93 Difference]: Finished difference Result 56411 states and 68904 transitions. [2021-11-23 14:14:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:45,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-23 14:14:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:45,920 INFO L225 Difference]: With dead ends: 56411 [2021-11-23 14:14:45,920 INFO L226 Difference]: Without dead ends: 56409 [2021-11-23 14:14:45,942 INFO L932 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 [2021-11-23 14:14:45,943 INFO L933 BasicCegarLoop]: 34517 mSDtfsCounter, 34439 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34439 SdHoareTripleChecker+Valid, 34517 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:45,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34439 Valid, 34517 Invalid, 1 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:14:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56409 states. [2021-11-23 14:14:47,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56409 to 56409. [2021-11-23 14:14:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56409 states, 56170 states have (on average 1.2208296243546377) internal successors, (68574), 56212 states have internal predecessors, (68574), 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) [2021-11-23 14:14:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56409 states to 56409 states and 68902 transitions. [2021-11-23 14:14:47,649 INFO L78 Accepts]: Start accepts. Automaton has 56409 states and 68902 transitions. Word has length 81 [2021-11-23 14:14:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:47,650 INFO L470 AbstractCegarLoop]: Abstraction has 56409 states and 68902 transitions. [2021-11-23 14:14:47,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-23 14:14:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 56409 states and 68902 transitions. [2021-11-23 14:14:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 14:14:47,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:47,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:14:47,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:14:47,654 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-23 14:14:47,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1517986890, now seen corresponding path program 1 times [2021-11-23 14:14:47,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:47,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695522027] [2021-11-23 14:14:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:47,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:14:48,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:48,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695522027] [2021-11-23 14:14:48,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695522027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:48,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:48,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:48,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060192318] [2021-11-23 14:14:48,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:48,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:48,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:48,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:48,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:48,256 INFO L87 Difference]: Start difference. First operand 56409 states and 68902 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2021-11-23 14:14:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:49,870 INFO L93 Difference]: Finished difference Result 56409 states and 68902 transitions. [2021-11-23 14:14:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 82 [2021-11-23 14:14:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:50,028 INFO L225 Difference]: With dead ends: 56409 [2021-11-23 14:14:50,028 INFO L226 Difference]: Without dead ends: 56407 [2021-11-23 14:14:50,054 INFO L932 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 [2021-11-23 14:14:50,055 INFO L933 BasicCegarLoop]: 34515 mSDtfsCounter, 34436 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34436 SdHoareTripleChecker+Valid, 34515 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:50,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34436 Valid, 34515 Invalid, 1 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:14:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56407 states. [2021-11-23 14:14:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56407 to 56407. [2021-11-23 14:14:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56407 states, 56169 states have (on average 1.2208157524613221) internal successors, (68572), 56210 states have internal predecessors, (68572), 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) [2021-11-23 14:14:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56407 states to 56407 states and 68900 transitions. [2021-11-23 14:14:52,085 INFO L78 Accepts]: Start accepts. Automaton has 56407 states and 68900 transitions. Word has length 82 [2021-11-23 14:14:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:52,087 INFO L470 AbstractCegarLoop]: Abstraction has 56407 states and 68900 transitions. [2021-11-23 14:14:52,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2021-11-23 14:14:52,088 INFO L276 IsEmpty]: Start isEmpty. Operand 56407 states and 68900 transitions. [2021-11-23 14:14:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 14:14:52,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:52,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:14:52,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:14:52,097 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [dm_cache_metadata_closeErr0ASSERT_VIOLATIONERROR_FUNCTION, dm_cache_metadata_closeErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-23 14:14:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:52,099 INFO L85 PathProgramCache]: Analyzing trace with hash 187134816, now seen corresponding path program 1 times [2021-11-23 14:14:52,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:52,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683265443] [2021-11-23 14:14:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:52,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:14:52,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:52,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683265443] [2021-11-23 14:14:52,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683265443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:52,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:52,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:52,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523270605] [2021-11-23 14:14:52,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:52,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:52,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:52,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:52,423 INFO L87 Difference]: Start difference. First operand 56407 states and 68900 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 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) [2021-11-23 14:14:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:54,285 INFO L93 Difference]: Finished difference Result 56407 states and 68900 transitions. [2021-11-23 14:14:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 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 [2021-11-23 14:14:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:54,394 INFO L225 Difference]: With dead ends: 56407 [2021-11-23 14:14:54,394 INFO L226 Difference]: Without dead ends: 56391 [2021-11-23 14:14:54,409 INFO L932 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 [2021-11-23 14:14:54,410 INFO L933 BasicCegarLoop]: 34505 mSDtfsCounter, 34380 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34380 SdHoareTripleChecker+Valid, 34537 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:54,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34380 Valid, 34537 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:14:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56391 states. [2021-11-23 14:14:56,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56391 to 56391. [2021-11-23 14:14:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56391 states, 56157 states have (on average 1.2207204800826255) internal successors, (68552), 56194 states have internal predecessors, (68552), 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) [2021-11-23 14:14:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56391 states to 56391 states and 68880 transitions. [2021-11-23 14:14:56,893 INFO L78 Accepts]: Start accepts. Automaton has 56391 states and 68880 transitions. Word has length 83 [2021-11-23 14:14:56,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:56,894 INFO L470 AbstractCegarLoop]: Abstraction has 56391 states and 68880 transitions. [2021-11-23 14:14:56,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 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) [2021-11-23 14:14:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 56391 states and 68880 transitions. [2021-11-23 14:14:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:14:56,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:56,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:14:56,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 14:14:56,910 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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)] === [2021-11-23 14:14:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1371930076, now seen corresponding path program 1 times [2021-11-23 14:14:56,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:56,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236422048] [2021-11-23 14:14:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:56,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:14:57,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:57,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236422048] [2021-11-23 14:14:57,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236422048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:57,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:57,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:14:57,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094725856] [2021-11-23 14:14:57,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:57,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:57,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:57,158 INFO L87 Difference]: Start difference. First operand 56391 states and 68880 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-23 14:15:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:15:00,732 INFO L93 Difference]: Finished difference Result 128400 states and 156966 transitions. [2021-11-23 14:15:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:15:00,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 103 [2021-11-23 14:15:00,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:15:00,950 INFO L225 Difference]: With dead ends: 128400 [2021-11-23 14:15:00,950 INFO L226 Difference]: Without dead ends: 72074 [2021-11-23 14:15:01,043 INFO L932 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 [2021-11-23 14:15:01,044 INFO L933 BasicCegarLoop]: 37954 mSDtfsCounter, 9723 mSDsluCounter, 34294 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9723 SdHoareTripleChecker+Valid, 72248 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:15:01,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9723 Valid, 72248 Invalid, 134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:15:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72074 states. [2021-11-23 14:15:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72074 to 72059. [2021-11-23 14:15:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72059 states, 71635 states have (on average 1.2223912891742863) internal successors, (87566), 71706 states have internal predecessors, (87566), 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) [2021-11-23 14:15:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72059 states to 72059 states and 88142 transitions. [2021-11-23 14:15:03,988 INFO L78 Accepts]: Start accepts. Automaton has 72059 states and 88142 transitions. Word has length 103 [2021-11-23 14:15:03,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:15:03,989 INFO L470 AbstractCegarLoop]: Abstraction has 72059 states and 88142 transitions. [2021-11-23 14:15:03,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-23 14:15:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 72059 states and 88142 transitions. [2021-11-23 14:15:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-23 14:15:04,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:15:04,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:15:04,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 14:15:04,023 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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)] === [2021-11-23 14:15:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:15:04,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1841575907, now seen corresponding path program 1 times [2021-11-23 14:15:04,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:15:04,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173437467] [2021-11-23 14:15:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:15:04,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:15:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:15:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:15:04,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:15:04,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173437467] [2021-11-23 14:15:04,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173437467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:15:04,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:15:04,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:15:04,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406977437] [2021-11-23 14:15:04,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:15:04,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:15:04,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:15:04,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:15:04,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:15:04,319 INFO L87 Difference]: Start difference. First operand 72059 states and 88142 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-23 14:15:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:15:06,224 INFO L93 Difference]: Finished difference Result 72059 states and 88142 transitions. [2021-11-23 14:15:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:15:06,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) Word has length 127 [2021-11-23 14:15:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:15:06,226 INFO L225 Difference]: With dead ends: 72059 [2021-11-23 14:15:06,226 INFO L226 Difference]: Without dead ends: 0