./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa --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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:36:18,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:36:18,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:36:18,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:36:18,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:36:18,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:36:18,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:36:18,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:36:18,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:36:18,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:36:18,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:36:18,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:36:18,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:36:18,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:36:18,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:36:18,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:36:18,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:36:18,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:36:18,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:36:18,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:36:18,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:36:18,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:36:18,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:36:18,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:36:18,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:36:18,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:36:18,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:36:18,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:36:18,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:36:18,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:36:18,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:36:18,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:36:18,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:36:18,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:36:18,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:36:18,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:36:18,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:36:18,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:36:18,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:36:18,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:36:18,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:36:18,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 19:36:18,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:36:18,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:36:18,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:36:18,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:36:18,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:36:18,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:36:18,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:36:18,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:36:18,879 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:36:18,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:36:18,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:36:18,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:36:18,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:36:18,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:36:18,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:36:18,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:36:18,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:36:18,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:36:18,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:36:18,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:36:18,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:36:18,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:36:18,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:36:18,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:36:18,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:36:18,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:36:18,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:36:18,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:36:18,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:36:18,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:36:18,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:36:18,881 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_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-12-06 19:36:19,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:36:19,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:36:19,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:36:19,069 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:36:19,069 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:36:19,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-06 19:36:19,115 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data/6884a2b2b/e35dd4b295b8412bba689a651ba4723b/FLAG7fb7607de [2021-12-06 19:36:19,629 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:36:19,629 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-06 19:36:19,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data/6884a2b2b/e35dd4b295b8412bba689a651ba4723b/FLAG7fb7607de [2021-12-06 19:36:20,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data/6884a2b2b/e35dd4b295b8412bba689a651ba4723b [2021-12-06 19:36:20,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:36:20,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:36:20,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:36:20,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:36:20,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:36:20,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:36:20" (1/1) ... [2021-12-06 19:36:20,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557ad87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:20, skipping insertion in model container [2021-12-06 19:36:20,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:36:20" (1/1) ... [2021-12-06 19:36:20,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:36:20,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:36:20,820 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_16dc01d1-da91-45bc-8caf-91da557ee848/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-06 19:36:20,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:36:20,847 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:36:20,979 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_16dc01d1-da91-45bc-8caf-91da557ee848/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-06 19:36:20,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:36:21,011 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:36:21,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21 WrapperNode [2021-12-06 19:36:21,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:36:21,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:36:21,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:36:21,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:36:21,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,092 INFO L137 Inliner]: procedures = 143, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 484 [2021-12-06 19:36:21,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:36:21,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:36:21,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:36:21,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:36:21,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:36:21,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:36:21,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:36:21,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:36:21,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (1/1) ... [2021-12-06 19:36:21,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:36:21,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:36:21,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:36:21,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:36:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-12-06 19:36:21,192 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-12-06 19:36:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:36:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-12-06 19:36:21,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-12-06 19:36:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 19:36:21,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 19:36:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:36:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 19:36:21,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 19:36:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 19:36:21,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 19:36:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:36:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:36:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-12-06 19:36:21,193 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-12-06 19:36:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:36:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:36:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-06 19:36:21,193 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-06 19:36:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 19:36:21,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 19:36:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:36:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:36:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:36:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-06 19:36:21,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-06 19:36:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:36:21,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:36:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 19:36:21,194 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 19:36:21,354 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:36:21,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:36:21,635 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:36:21,642 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:36:21,643 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:36:21,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:36:21 BoogieIcfgContainer [2021-12-06 19:36:21,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:36:21,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:36:21,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:36:21,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:36:21,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:36:20" (1/3) ... [2021-12-06 19:36:21,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd0ec63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:36:21, skipping insertion in model container [2021-12-06 19:36:21,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:21" (2/3) ... [2021-12-06 19:36:21,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd0ec63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:36:21, skipping insertion in model container [2021-12-06 19:36:21,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:36:21" (3/3) ... [2021-12-06 19:36:21,652 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-06 19:36:21,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:36:21,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:36:21,700 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:36:21,706 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 [2021-12-06 19:36:21,706 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:36:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-06 19:36:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 19:36:21,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:36:21,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:36:21,731 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:36:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:36:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1803778122, now seen corresponding path program 1 times [2021-12-06 19:36:21,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:36:21,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268898255] [2021-12-06 19:36:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:36:21,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:36:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:21,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:36:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:36:22,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:36:22,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268898255] [2021-12-06 19:36:22,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268898255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:36:22,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:36:22,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:36:22,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699570482] [2021-12-06 19:36:22,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:36:22,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:36:22,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:36:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:36:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:36:22,050 INFO L87 Difference]: Start difference. First operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:36:22,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:36:22,107 INFO L93 Difference]: Finished difference Result 346 states and 438 transitions. [2021-12-06 19:36:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:36:22,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 19:36:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:36:22,121 INFO L225 Difference]: With dead ends: 346 [2021-12-06 19:36:22,121 INFO L226 Difference]: Without dead ends: 216 [2021-12-06 19:36:22,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:36:22,129 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 139 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:36:22,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 303 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:36:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-06 19:36:22,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-06 19:36:22,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2181818181818183) internal successors, (201), 166 states have internal predecessors, (201), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-06 19:36:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 265 transitions. [2021-12-06 19:36:22,193 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 265 transitions. Word has length 15 [2021-12-06 19:36:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:36:22,194 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 265 transitions. [2021-12-06 19:36:22,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:36:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 265 transitions. [2021-12-06 19:36:22,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 19:36:22,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:36:22,199 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:36:22,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:36:22,199 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:36:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:36:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1193905023, now seen corresponding path program 1 times [2021-12-06 19:36:22,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:36:22,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489394914] [2021-12-06 19:36:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:36:22,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:36:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:36:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 19:36:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:36:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 19:36:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:36:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 19:36:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:36:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:36:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 19:36:22,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:36:22,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489394914] [2021-12-06 19:36:22,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489394914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:36:22,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:36:22,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:36:22,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844753018] [2021-12-06 19:36:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:36:22,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:36:22,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:36:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:36:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:36:22,420 INFO L87 Difference]: Start difference. First operand 216 states and 265 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:36:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:36:22,550 INFO L93 Difference]: Finished difference Result 428 states and 526 transitions. [2021-12-06 19:36:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:36:22,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2021-12-06 19:36:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:36:22,553 INFO L225 Difference]: With dead ends: 428 [2021-12-06 19:36:22,553 INFO L226 Difference]: Without dead ends: 220 [2021-12-06 19:36:22,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:36:22,556 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 33 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:36:22,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 450 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:36:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-06 19:36:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2021-12-06 19:36:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2121212121212122) internal successors, (200), 166 states have internal predecessors, (200), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-06 19:36:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2021-12-06 19:36:22,575 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 78 [2021-12-06 19:36:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:36:22,575 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2021-12-06 19:36:22,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:36:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2021-12-06 19:36:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 19:36:22,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:36:22,579 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:36:22,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:36:22,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:36:22,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:36:22,580 INFO L85 PathProgramCache]: Analyzing trace with hash -391319208, now seen corresponding path program 1 times [2021-12-06 19:36:22,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:36:22,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129936893] [2021-12-06 19:36:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:36:22,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:36:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:36:22,643 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:36:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:36:22,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:36:22,733 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:36:22,733 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:36:22,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:36:22,738 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 19:36:22,740 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:36:22,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:36:22 BoogieIcfgContainer [2021-12-06 19:36:22,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:36:22,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:36:22,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:36:22,844 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:36:22,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:36:21" (3/4) ... [2021-12-06 19:36:22,847 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 19:36:22,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:36:22,848 INFO L158 Benchmark]: Toolchain (without parser) took 2699.75ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 65.6MB in the beginning and 51.1MB in the end (delta: 14.5MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2021-12-06 19:36:22,849 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:36:22,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 862.46ms. Allocated memory is still 104.9MB. Free memory was 65.3MB in the beginning and 44.5MB in the end (delta: 20.9MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2021-12-06 19:36:22,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.41ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 44.5MB in the beginning and 84.0MB in the end (delta: -39.6MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-12-06 19:36:22,850 INFO L158 Benchmark]: Boogie Preprocessor took 41.83ms. Allocated memory is still 125.8MB. Free memory was 84.0MB in the beginning and 80.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:36:22,851 INFO L158 Benchmark]: RCFGBuilder took 509.32ms. Allocated memory is still 125.8MB. Free memory was 80.7MB in the beginning and 78.4MB in the end (delta: 2.3MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2021-12-06 19:36:22,851 INFO L158 Benchmark]: TraceAbstraction took 1197.14ms. Allocated memory is still 125.8MB. Free memory was 78.4MB in the beginning and 52.0MB in the end (delta: 26.5MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2021-12-06 19:36:22,852 INFO L158 Benchmark]: Witness Printer took 3.62ms. Allocated memory is still 125.8MB. Free memory was 52.0MB in the beginning and 51.1MB in the end (delta: 841.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:36:22,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 862.46ms. Allocated memory is still 104.9MB. Free memory was 65.3MB in the beginning and 44.5MB in the end (delta: 20.9MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.41ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 44.5MB in the beginning and 84.0MB in the end (delta: -39.6MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.83ms. Allocated memory is still 125.8MB. Free memory was 84.0MB in the beginning and 80.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 509.32ms. Allocated memory is still 125.8MB. Free memory was 80.7MB in the beginning and 78.4MB in the end (delta: 2.3MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1197.14ms. Allocated memory is still 125.8MB. Free memory was 78.4MB in the beginning and 52.0MB in the end (delta: 26.5MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Witness Printer took 3.62ms. Allocated memory is still 125.8MB. Free memory was 52.0MB in the beginning and 51.1MB in the end (delta: 841.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 4185. Possible FailurePath: [L3648] static int major ; [L3649] static int index ; [L3974-L3975] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4173-L4174] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4175-L4178] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4179-L4180] static struct virtio_driver virtio_blk = {{"virtio_blk", 0, & __this_module, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}, (struct virtio_device_id const *)(& id_table), (unsigned int const *)(& features), 9U, & virtblk_probe, & virtblk_remove, 0}; [L4202] struct virtio_device_id const __mod_virtio_device_table ; [L4207] int LDV_IN_INTERRUPT ; [L4348] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4210] struct block_device *var_group1 ; [L4211] fmode_t var_virtblk_ioctl_5_p1 ; [L4212] unsigned int var_virtblk_ioctl_5_p2 ; [L4213] unsigned long var_virtblk_ioctl_5_p3 ; [L4214] struct hd_geometry *var_group2 ; [L4215] int tmp ; [L4216] int tmp___0 ; [L4217] int tmp___1 ; [L4219] LDV_IN_INTERRUPT = 1 [L4220] FCALL ldv_initialize() [L4221] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4222] CALL, EXPR init() [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] RET, EXPR register_blkdev(0U, "virtblk") [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4190] CALL, EXPR register_virtio_driver(& virtio_blk) [L4535] return __VERIFIER_nondet_int(); [L4190] RET, EXPR register_virtio_driver(& virtio_blk) [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4222] RET, EXPR init() [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___1=-2, virtblk_fops={12:0}, virtio_blk={15:0}] [L4229] tmp___0 = __VERIFIER_nondet_int() [L4231] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=-2, virtblk_fops={12:0}, virtio_blk={15:0}] [L4232] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=-2, virtblk_fops={12:0}, virtio_blk={15:0}] [L4233] CALL virtblk_ioctl(var_group1, var_virtblk_ioctl_5_p1, var_virtblk_ioctl_5_p2, var_virtblk_ioctl_5_p3) [L3912] struct gendisk *disk ; [L3913] struct virtio_blk *vblk ; [L3914] void *usr_data ; [L3915] char id_str[20U] ; [L3916] int err ; [L3917] int tmp ; [L3918] bool tmp___0 ; [L3919] int tmp___1 ; [L3920] int tmp___2 ; [L3922] EXPR bdev->bd_disk [L3922] disk = bdev->bd_disk [L3923] EXPR disk->private_data [L3923] vblk = (struct virtio_blk *)disk->private_data [L3924] COND TRUE cmd == 1447184708U [L3925] usr_data = (void *)data [L3926] CALL, EXPR virtblk_get_id(disk, (char *)(& id_str)) [L3879] struct virtio_blk *vblk ; [L3880] struct request *req ; [L3881] struct bio *bio ; [L3882] long tmp ; [L3883] long tmp___0 ; [L3884] long tmp___1 ; [L3885] long tmp___2 ; [L3886] int tmp___3 ; [L3888] EXPR disk->private_data [L3888] vblk = (struct virtio_blk *)disk->private_data [L3889] EXPR vblk->disk [L3889] EXPR (vblk->disk)->queue [L3889] CALL, EXPR bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4427] CALL, EXPR ldv_malloc(sizeof(struct bio)) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [\old(size)=112, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, size=112, virtblk_fops={12:0}, virtio_blk={15:0}] [L4427] RET, EXPR ldv_malloc(sizeof(struct bio)) VAL [\old(arg2)=20, \old(arg3)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, arg0={18446744073709551623:18446744073709551620}, arg0={18446744073709551623:18446744073709551620}, arg1={17:0}, arg1={17:0}, arg2=20, arg3=208, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct bio))={0:0}, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] RET, EXPR bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L3890] CALL, EXPR IS_ERR((void const *)bio) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4274] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] CALL, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4307] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] RET, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3890] RET, EXPR IS_ERR((void const *)bio) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, bio={0:0}, disk={18446744073709551615:0}, disk={18446744073709551615:0}, features={14:0}, id_str={17:0}, id_str={17:0}, id_table={13:0}, index=0, IS_ERR((void const *)bio)=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L3896] CALL, EXPR ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L4286] CALL, EXPR blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4443] CALL, EXPR ldv_malloc(sizeof(struct request)) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [\old(size)=322, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, size=322, virtblk_fops={12:0}, virtio_blk={15:0}] [L4443] RET, EXPR ldv_malloc(sizeof(struct request)) VAL [\old(arg2)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, arg0={18446744073709551623:18446744073709551620}, arg0={18446744073709551623:18446744073709551620}, arg1={0:0}, arg1={0:0}, arg2=208, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct request))={0:0}, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] RET, EXPR blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4288] CALL ldv_get_blk_rq(ldv_func_res, ldv_func_arg3) [L4351] long tmp ; VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4288] RET ldv_get_blk_rq(ldv_func_res, ldv_func_arg3) [L4289] return (ldv_func_res); VAL [\old(ldv_func_arg3)=208, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, ldv_func_arg1={18446744073709551623:18446744073709551620}, ldv_func_arg1={18446744073709551623:18446744073709551620}, ldv_func_arg2={0:0}, ldv_func_arg2={0:0}, ldv_func_arg3=208, ldv_func_res={0:0}, LDV_IN_INTERRUPT=1, major=0, tmp={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3896] RET, EXPR ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L3897] CALL, EXPR IS_ERR((void const *)req) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4274] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] CALL, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4307] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] RET, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3897] RET, EXPR IS_ERR((void const *)req) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, bio={0:0}, disk={18446744073709551615:0}, disk={18446744073709551615:0}, features={14:0}, id_str={17:0}, id_str={17:0}, id_table={13:0}, index=0, IS_ERR((void const *)req)=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, req={0:0}, tmp___0=0, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3897] tmp___2 = IS_ERR((void const *)req) [L3898] COND FALSE !(tmp___2 != 0L) [L3904] req->cmd_type = 7 [L3905] EXPR vblk->disk [L3905] EXPR (vblk->disk)->queue [L3905] EXPR vblk->disk [L3905] CALL, EXPR blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L4437] return __VERIFIER_nondet_int(); [L3905] RET, EXPR blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [\result=18, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, bio={0:0}, disk={18446744073709551615:0}, disk={18446744073709551615:0}, features={14:0}, id_str={17:0}, id_str={17:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, req={0:0}, tmp___0=0, tmp___2=0, tmp___3=18, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3926] RET, EXPR virtblk_get_id(disk, (char *)(& id_str)) [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [\old(cmd)=1447184708, \old(data)=18446744073709551612, \old(mode)=4294967294, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, bdev={18446744073709551619:-3}, bdev={18446744073709551619:-3}, cmd=1447184708, data=18446744073709551612, disk={18446744073709551615:0}, err=18, features={14:0}, id_str={17:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=4294967294, usr_data={0:-4}, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3935] return (err); [L3935] return (err); VAL [\old(cmd)=1447184708, \old(data)=18446744073709551612, \old(mode)=4294967294, \result=18, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, bdev={18446744073709551619:-3}, bdev={18446744073709551619:-3}, cmd=1447184708, data=18446744073709551612, disk={18446744073709551615:0}, err=18, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=4294967294, usr_data={0:-4}, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4233] RET virtblk_ioctl(var_group1, var_virtblk_ioctl_5_p1, var_virtblk_ioctl_5_p2, var_virtblk_ioctl_5_p3) [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=0, var_group1={18446744073709551619:-3}, var_virtblk_ioctl_5_p1=4294967294, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=18446744073709551612, virtblk_fops={12:0}, virtio_blk={15:0}] [L4249] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=0, var_group1={18446744073709551619:-3}, var_virtblk_ioctl_5_p1=4294967294, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=18446744073709551612, virtblk_fops={12:0}, virtio_blk={15:0}] [L4250] CALL fini() [L4197] FCALL unregister_blkdev((unsigned int )major, "virtblk") [L4198] FCALL unregister_virtio_driver(& virtio_blk) [L4250] RET fini() [L4252] CALL ldv_check_final_state() [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4387] CALL ldv_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 753 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 325 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=1, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 20/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 19:36:22,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa --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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:36:24,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:36:24,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:36:24,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:36:24,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:36:24,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:36:24,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:36:24,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:36:24,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:36:24,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:36:24,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:36:24,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:36:24,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:36:24,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:36:24,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:36:24,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:36:24,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:36:24,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:36:24,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:36:24,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:36:24,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:36:24,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:36:24,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:36:24,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:36:24,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:36:24,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:36:24,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:36:24,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:36:24,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:36:24,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:36:24,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:36:24,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:36:24,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:36:24,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:36:24,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:36:24,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:36:24,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:36:24,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:36:24,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:36:24,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:36:24,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:36:24,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-06 19:36:24,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:36:24,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:36:24,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:36:24,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:36:24,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:36:24,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:36:24,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:36:24,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:36:24,565 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:36:24,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:36:24,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:36:24,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:36:24,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:36:24,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:36:24,566 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:36:24,566 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 19:36:24,566 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 19:36:24,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:36:24,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:36:24,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:36:24,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:36:24,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:36:24,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:36:24,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:36:24,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:36:24,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:36:24,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:36:24,568 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 19:36:24,568 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 19:36:24,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:36:24,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:36:24,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:36:24,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:36:24,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 19:36:24,569 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-12-06 19:36:24,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:36:24,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:36:24,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:36:24,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:36:24,827 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:36:24,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-06 19:36:24,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data/306bf75b9/9f1cadf742094587878fc153426b0934/FLAG359aa3226 [2021-12-06 19:36:25,425 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:36:25,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-06 19:36:25,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data/306bf75b9/9f1cadf742094587878fc153426b0934/FLAG359aa3226 [2021-12-06 19:36:25,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/data/306bf75b9/9f1cadf742094587878fc153426b0934 [2021-12-06 19:36:25,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:36:25,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:36:25,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:36:25,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:36:25,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:36:25,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:36:25" (1/1) ... [2021-12-06 19:36:25,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db90c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:25, skipping insertion in model container [2021-12-06 19:36:25,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:36:25" (1/1) ... [2021-12-06 19:36:25,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:36:25,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:36:26,618 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_16dc01d1-da91-45bc-8caf-91da557ee848/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-06 19:36:26,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:36:26,650 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 19:36:26,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:36:26,796 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_16dc01d1-da91-45bc-8caf-91da557ee848/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-06 19:36:26,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:36:26,809 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:36:26,937 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_16dc01d1-da91-45bc-8caf-91da557ee848/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-06 19:36:26,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:36:26,978 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:36:26,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26 WrapperNode [2021-12-06 19:36:26,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:36:26,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:36:26,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:36:26,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:36:26,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,039 INFO L137 Inliner]: procedures = 150, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 458 [2021-12-06 19:36:27,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:36:27,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:36:27,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:36:27,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:36:27,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:36:27,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:36:27,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:36:27,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:36:27,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (1/1) ... [2021-12-06 19:36:27,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:36:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:36:27,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:36:27,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:36:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-06 19:36:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-06 19:36:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-12-06 19:36:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-12-06 19:36:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 19:36:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 19:36:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 19:36:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-12-06 19:36:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-12-06 19:36:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-06 19:36:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 19:36:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-06 19:36:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-06 19:36:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-06 19:36:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:36:27,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:36:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 19:36:27,135 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 19:36:27,284 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:36:27,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:36:27,765 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:36:27,771 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:36:27,771 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:36:27,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:36:27 BoogieIcfgContainer [2021-12-06 19:36:27,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:36:27,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:36:27,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:36:27,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:36:27,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:36:25" (1/3) ... [2021-12-06 19:36:27,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d308d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:36:27, skipping insertion in model container [2021-12-06 19:36:27,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:36:26" (2/3) ... [2021-12-06 19:36:27,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d308d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:36:27, skipping insertion in model container [2021-12-06 19:36:27,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:36:27" (3/3) ... [2021-12-06 19:36:27,778 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-06 19:36:27,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:36:27,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:36:27,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:36:27,833 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 [2021-12-06 19:36:27,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:36:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-06 19:36:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 19:36:27,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:36:27,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:36:27,851 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:36:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:36:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1549604235, now seen corresponding path program 1 times [2021-12-06 19:36:27,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:36:27,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625040963] [2021-12-06 19:36:27,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:36:27,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:36:27,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:36:27,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:36:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 19:36:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:28,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:36:28,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:36:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:36:28,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:36:28,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:36:28,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625040963] [2021-12-06 19:36:28,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625040963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:36:28,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:36:28,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:36:28,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372642647] [2021-12-06 19:36:28,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:36:28,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:36:28,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:36:28,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:36:28,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:36:28,134 INFO L87 Difference]: Start difference. First operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:36:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:36:28,201 INFO L93 Difference]: Finished difference Result 346 states and 438 transitions. [2021-12-06 19:36:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:36:28,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 19:36:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:36:28,213 INFO L225 Difference]: With dead ends: 346 [2021-12-06 19:36:28,213 INFO L226 Difference]: Without dead ends: 216 [2021-12-06 19:36:28,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:36:28,219 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 137 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:36:28,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 303 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:36:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-06 19:36:28,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-06 19:36:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2181818181818183) internal successors, (201), 166 states have internal predecessors, (201), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-06 19:36:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 265 transitions. [2021-12-06 19:36:28,280 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 265 transitions. Word has length 15 [2021-12-06 19:36:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:36:28,281 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 265 transitions. [2021-12-06 19:36:28,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:36:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 265 transitions. [2021-12-06 19:36:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 19:36:28,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:36:28,285 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:36:28,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:36:28,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:36:28,487 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:36:28,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:36:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1763310802, now seen corresponding path program 1 times [2021-12-06 19:36:28,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:36:28,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123850158] [2021-12-06 19:36:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:36:28,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:36:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:36:28,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:36:28,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 19:36:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:36:28,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:36:28,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:36:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 19:36:29,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:36:29,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:36:29,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123850158] [2021-12-06 19:36:29,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123850158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:36:29,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:36:29,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:36:29,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483831810] [2021-12-06 19:36:29,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:36:29,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:36:29,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:36:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:36:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:36:29,013 INFO L87 Difference]: Start difference. First operand 216 states and 265 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:36:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:36:29,055 INFO L93 Difference]: Finished difference Result 424 states and 520 transitions. [2021-12-06 19:36:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:36:29,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2021-12-06 19:36:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:36:29,058 INFO L225 Difference]: With dead ends: 424 [2021-12-06 19:36:29,058 INFO L226 Difference]: Without dead ends: 216 [2021-12-06 19:36:29,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:36:29,061 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 1 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:36:29,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 445 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:36:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-06 19:36:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-06 19:36:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2121212121212122) internal successors, (200), 166 states have internal predecessors, (200), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-06 19:36:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2021-12-06 19:36:29,084 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 78 [2021-12-06 19:36:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:36:29,085 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2021-12-06 19:36:29,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 19:36:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2021-12-06 19:36:29,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 19:36:29,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:36:29,088 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:36:29,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 19:36:29,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:36:29,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:36:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:36:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash -251868651, now seen corresponding path program 1 times [2021-12-06 19:36:29,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:36:29,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628947689] [2021-12-06 19:36:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:36:29,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:36:29,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:36:29,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:36:29,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 19:36:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:36:30,026 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:36:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:36:30,818 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 19:36:30,818 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:36:30,819 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:36:30,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 19:36:31,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:36:31,031 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 19:36:31,039 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:36:31,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:36:31 BoogieIcfgContainer [2021-12-06 19:36:31,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:36:31,161 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:36:31,161 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:36:31,161 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:36:31,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:36:27" (3/4) ... [2021-12-06 19:36:31,163 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 19:36:31,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:36:31,164 INFO L158 Benchmark]: Toolchain (without parser) took 5256.96ms. Allocated memory was 52.4MB in the beginning and 104.9MB in the end (delta: 52.4MB). Free memory was 32.5MB in the beginning and 37.0MB in the end (delta: -4.5MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2021-12-06 19:36:31,164 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 32.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:36:31,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1070.74ms. Allocated memory was 52.4MB in the beginning and 86.0MB in the end (delta: 33.6MB). Free memory was 32.4MB in the beginning and 49.6MB in the end (delta: -17.2MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2021-12-06 19:36:31,165 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.62ms. Allocated memory is still 86.0MB. Free memory was 49.6MB in the beginning and 44.2MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 19:36:31,166 INFO L158 Benchmark]: Boogie Preprocessor took 40.12ms. Allocated memory is still 86.0MB. Free memory was 44.2MB in the beginning and 40.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 19:36:31,166 INFO L158 Benchmark]: RCFGBuilder took 691.91ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 40.0MB in the beginning and 42.2MB in the end (delta: -2.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-12-06 19:36:31,166 INFO L158 Benchmark]: TraceAbstraction took 3386.51ms. Allocated memory is still 104.9MB. Free memory was 41.7MB in the beginning and 37.5MB in the end (delta: 4.1MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-12-06 19:36:31,167 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 104.9MB. Free memory was 37.5MB in the beginning and 37.0MB in the end (delta: 518.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:36:31,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 32.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1070.74ms. Allocated memory was 52.4MB in the beginning and 86.0MB in the end (delta: 33.6MB). Free memory was 32.4MB in the beginning and 49.6MB in the end (delta: -17.2MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.62ms. Allocated memory is still 86.0MB. Free memory was 49.6MB in the beginning and 44.2MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.12ms. Allocated memory is still 86.0MB. Free memory was 44.2MB in the beginning and 40.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 691.91ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 40.0MB in the beginning and 42.2MB in the end (delta: -2.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3386.51ms. Allocated memory is still 104.9MB. Free memory was 41.7MB in the beginning and 37.5MB in the end (delta: 4.1MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 104.9MB. Free memory was 37.5MB in the beginning and 37.0MB in the end (delta: 518.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 4185. Possible FailurePath: [L3648] static int major ; [L3649] static int index ; [L3974-L3975] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4173-L4174] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4175-L4178] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4179-L4180] static struct virtio_driver virtio_blk = {{"virtio_blk", 0, & __this_module, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}, (struct virtio_device_id const *)(& id_table), (unsigned int const *)(& features), 9U, & virtblk_probe, & virtblk_remove, 0}; [L4202] struct virtio_device_id const __mod_virtio_device_table ; [L4207] int LDV_IN_INTERRUPT ; [L4348] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4210] struct block_device *var_group1 ; [L4211] fmode_t var_virtblk_ioctl_5_p1 ; [L4212] unsigned int var_virtblk_ioctl_5_p2 ; [L4213] unsigned long var_virtblk_ioctl_5_p3 ; [L4214] struct hd_geometry *var_group2 ; [L4215] int tmp ; [L4216] int tmp___0 ; [L4217] int tmp___1 ; [L4219] LDV_IN_INTERRUPT = 1 [L4220] FCALL ldv_initialize() [L4221] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4222] CALL, EXPR init() [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] RET, EXPR register_blkdev(0U, "virtblk") [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4190] CALL, EXPR register_virtio_driver(& virtio_blk) [L4535] return __VERIFIER_nondet_int(); [L4190] RET, EXPR register_virtio_driver(& virtio_blk) [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4222] RET, EXPR init() [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___1=2147483648, virtblk_fops={12:0}, virtio_blk={15:0}] [L4229] tmp___0 = __VERIFIER_nondet_int() [L4231] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=2147483648, virtblk_fops={12:0}, virtio_blk={15:0}] [L4232] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=2147483648, virtblk_fops={12:0}, virtio_blk={15:0}] [L4233] CALL virtblk_ioctl(var_group1, var_virtblk_ioctl_5_p1, var_virtblk_ioctl_5_p2, var_virtblk_ioctl_5_p3) [L3912] struct gendisk *disk ; [L3913] struct virtio_blk *vblk ; [L3914] void *usr_data ; [L3915] char id_str[20U] ; [L3916] int err ; [L3917] int tmp ; [L3918] bool tmp___0 ; [L3919] int tmp___1 ; [L3920] int tmp___2 ; [L3922] EXPR bdev->bd_disk [L3922] disk = bdev->bd_disk [L3923] EXPR disk->private_data [L3923] vblk = (struct virtio_blk *)disk->private_data [L3924] COND TRUE cmd == 1447184708U [L3925] usr_data = (void *)data [L3926] CALL, EXPR virtblk_get_id(disk, (char *)(& id_str)) [L3879] struct virtio_blk *vblk ; [L3880] struct request *req ; [L3881] struct bio *bio ; [L3882] long tmp ; [L3883] long tmp___0 ; [L3884] long tmp___1 ; [L3885] long tmp___2 ; [L3886] int tmp___3 ; [L3888] EXPR disk->private_data [L3888] vblk = (struct virtio_blk *)disk->private_data [L3889] EXPR vblk->disk [L3889] EXPR (vblk->disk)->queue [L3889] CALL, EXPR bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4427] CALL, EXPR ldv_malloc(sizeof(struct bio)) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [\old(size)=112, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, size=112, virtblk_fops={12:0}, virtio_blk={15:0}] [L4427] RET, EXPR ldv_malloc(sizeof(struct bio)) VAL [\old(arg2)=20, \old(arg3)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, arg0={1572864:0}, arg0={1572864:0}, arg1={22:0}, arg1={22:0}, arg2=20, arg3=208, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct bio))={0:0}, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] RET, EXPR bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L3890] CALL, EXPR IS_ERR((void const *)bio) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4274] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] CALL, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4307] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] RET, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3890] RET, EXPR IS_ERR((void const *)bio) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bio={0:0}, disk={0:0}, disk={0:0}, features={14:0}, id_str={22:0}, id_str={22:0}, id_table={13:0}, index=0, IS_ERR((void const *)bio)=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, vblk={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L3896] CALL, EXPR ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L4286] CALL, EXPR blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4443] CALL, EXPR ldv_malloc(sizeof(struct request)) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [\old(size)=322, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, size=322, virtblk_fops={12:0}, virtio_blk={15:0}] [L4443] RET, EXPR ldv_malloc(sizeof(struct request)) VAL [\old(arg2)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, arg0={1572864:0}, arg0={1572864:0}, arg1={0:0}, arg1={0:0}, arg2=208, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct request))={0:0}, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] RET, EXPR blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4288] CALL ldv_get_blk_rq(ldv_func_res, ldv_func_arg3) [L4351] long tmp ; VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4288] RET ldv_get_blk_rq(ldv_func_res, ldv_func_arg3) [L4289] return (ldv_func_res); VAL [\old(ldv_func_arg3)=208, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, ldv_func_arg1={1572864:0}, ldv_func_arg1={1572864:0}, ldv_func_arg2={0:0}, ldv_func_arg2={0:0}, ldv_func_arg3=208, ldv_func_res={0:0}, LDV_IN_INTERRUPT=1, major=0, tmp={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3896] RET, EXPR ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L3897] CALL, EXPR IS_ERR((void const *)req) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4274] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] CALL, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4307] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] RET, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3897] RET, EXPR IS_ERR((void const *)req) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bio={0:0}, disk={0:0}, disk={0:0}, features={14:0}, id_str={22:0}, id_str={22:0}, id_table={13:0}, index=0, IS_ERR((void const *)req)=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, req={0:0}, tmp___0=0, vblk={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3897] tmp___2 = IS_ERR((void const *)req) [L3898] COND FALSE !(tmp___2 != 0L) [L3904] req->cmd_type = 7 [L3905] EXPR vblk->disk [L3905] EXPR (vblk->disk)->queue [L3905] EXPR vblk->disk [L3905] CALL, EXPR blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L4437] return __VERIFIER_nondet_int(); [L3905] RET, EXPR blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [\result=-2147483648, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bio={0:0}, disk={0:0}, disk={0:0}, features={14:0}, id_str={22:0}, id_str={22:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, req={0:0}, tmp___0=0, tmp___2=0, tmp___3=2147483648, vblk={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3926] RET, EXPR virtblk_get_id(disk, (char *)(& id_str)) [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [\old(cmd)=1447184708, \old(data)=37, \old(mode)=11, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bdev={0:0}, bdev={0:0}, cmd=1447184708, data=37, disk={0:0}, err=2147483648, features={14:0}, id_str={22:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=11, usr_data={0:37}, vblk={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3935] return (err); [L3935] return (err); VAL [\old(cmd)=1447184708, \old(data)=37, \old(mode)=11, \result=-2147483648, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bdev={0:0}, bdev={0:0}, cmd=1447184708, data=37, disk={0:0}, err=2147483648, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=11, usr_data={0:37}, vblk={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4233] RET virtblk_ioctl(var_group1, var_virtblk_ioctl_5_p1, var_virtblk_ioctl_5_p2, var_virtblk_ioctl_5_p3) [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=0, var_group1={0:0}, var_virtblk_ioctl_5_p1=11, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=37, virtblk_fops={12:0}, virtio_blk={15:0}] [L4249] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=0, var_group1={0:0}, var_virtblk_ioctl_5_p1=11, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=37, virtblk_fops={12:0}, virtio_blk={15:0}] [L4250] CALL fini() [L4197] FCALL unregister_blkdev((unsigned int )major, "virtblk") [L4198] FCALL unregister_virtio_driver(& virtio_blk) [L4250] RET fini() [L4252] CALL ldv_check_final_state() [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4387] CALL ldv_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 748 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 419 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 329 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 3 NumberOfNonLiveVariables, 645 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 20/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 19:36:31,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc01d1-da91-45bc-8caf-91da557ee848/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample