./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/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_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:45:02,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:45:02,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:45:02,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:45:02,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:45:02,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:45:02,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:45:02,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:45:02,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:45:02,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:45:02,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:45:02,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:45:02,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:45:02,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:45:02,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:45:02,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:45:02,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:45:02,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:45:02,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:45:02,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:45:02,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:45:02,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:45:02,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:45:02,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:45:02,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:45:02,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:45:02,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:45:02,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:45:02,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:45:02,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:45:02,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:45:02,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:45:02,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:45:02,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:45:02,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:45:02,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:45:02,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:45:02,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:45:02,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:45:02,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:45:02,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:45:02,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:45:02,867 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:45:02,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:45:02,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:45:02,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:45:02,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:45:02,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:45:02,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:45:02,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:45:02,870 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:45:02,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:45:02,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:45:02,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:45:02,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:45:02,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:45:02,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:45:02,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:45:02,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:45:02,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:45:02,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:45:02,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:45:02,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:45:02,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:02,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:45:02,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:45:02,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:45:02,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:45:02,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:45:02,875 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:45:02,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:45:02,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:45:02,876 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_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2022-11-02 20:45:03,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:45:03,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:45:03,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:45:03,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:45:03,186 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:45:03,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2022-11-02 20:45:03,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data/9b4c30a31/0ccb905a253b419fa3026a5bd97c925f/FLAG8e7f827b9 [2022-11-02 20:45:04,153 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:45:04,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2022-11-02 20:45:04,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data/9b4c30a31/0ccb905a253b419fa3026a5bd97c925f/FLAG8e7f827b9 [2022-11-02 20:45:04,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data/9b4c30a31/0ccb905a253b419fa3026a5bd97c925f [2022-11-02 20:45:04,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:45:04,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:45:04,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:04,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:45:04,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:45:04,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:04" (1/1) ... [2022-11-02 20:45:04,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd07b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:04, skipping insertion in model container [2022-11-02 20:45:04,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:04" (1/1) ... [2022-11-02 20:45:04,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:45:04,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:45:06,038 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_43541d6a-9112-46bd-9096-8a4fa839043b/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2022-11-02 20:45:06,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:06,080 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:45:06,420 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_43541d6a-9112-46bd-9096-8a4fa839043b/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2022-11-02 20:45:06,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:06,481 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:45:06,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06 WrapperNode [2022-11-02 20:45:06,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:06,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:06,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:45:06,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:45:06,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,595 INFO L138 Inliner]: procedures = 143, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 484 [2022-11-02 20:45:06,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:06,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:45:06,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:45:06,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:45:06,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,641 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:45:06,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:45:06,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:45:06,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:45:06,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (1/1) ... [2022-11-02 20:45:06,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:06,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:06,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:45:06,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:45:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2022-11-02 20:45:06,770 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2022-11-02 20:45:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:45:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-02 20:45:06,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-02 20:45:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:45:06,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:45:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:45:06,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:45:06,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:45:06,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:45:06,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:45:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:45:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:45:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2022-11-02 20:45:06,773 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2022-11-02 20:45:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:45:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:45:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-02 20:45:06,774 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-02 20:45:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-02 20:45:06,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-02 20:45:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:45:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:45:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:45:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-02 20:45:06,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-02 20:45:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:45:06,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:45:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-02 20:45:06,776 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-02 20:45:07,177 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:45:07,180 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:45:07,856 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:45:07,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:45:07,864 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:45:07,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:07 BoogieIcfgContainer [2022-11-02 20:45:07,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:45:07,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:45:07,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:45:07,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:45:07,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:45:04" (1/3) ... [2022-11-02 20:45:07,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5e4fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:07, skipping insertion in model container [2022-11-02 20:45:07,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:06" (2/3) ... [2022-11-02 20:45:07,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5e4fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:07, skipping insertion in model container [2022-11-02 20:45:07,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:07" (3/3) ... [2022-11-02 20:45:07,878 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2022-11-02 20:45:07,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:45:07,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:45:07,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:07,997 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e2754b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:07,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:45:08,002 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) [2022-11-02 20:45:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:45:08,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:08,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:08,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1803778122, now seen corresponding path program 1 times [2022-11-02 20:45:08,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:08,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467156221] [2022-11-02 20:45:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:08,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:45:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:08,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:08,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467156221] [2022-11-02 20:45:08,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467156221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:08,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:08,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:45:08,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230279284] [2022-11-02 20:45:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:08,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:08,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:08,510 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) [2022-11-02 20:45:08,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:08,633 INFO L93 Difference]: Finished difference Result 346 states and 438 transitions. [2022-11-02 20:45:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:08,636 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 [2022-11-02 20:45:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:08,648 INFO L225 Difference]: With dead ends: 346 [2022-11-02 20:45:08,649 INFO L226 Difference]: Without dead ends: 216 [2022-11-02 20:45:08,653 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:45:08,657 INFO L413 NwaCegarLoop]: 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 [2022-11-02 20:45:08,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 303 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-02 20:45:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-02 20:45:08,726 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) [2022-11-02 20:45:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 265 transitions. [2022-11-02 20:45:08,732 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 265 transitions. Word has length 15 [2022-11-02 20:45:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:08,736 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 265 transitions. [2022-11-02 20:45:08,737 INFO L496 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) [2022-11-02 20:45:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 265 transitions. [2022-11-02 20:45:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 20:45:08,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:08,742 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:45:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:45:08,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1193905023, now seen corresponding path program 1 times [2022-11-02 20:45:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:08,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388725312] [2022-11-02 20:45:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:45:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:45:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:45:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:45:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:45:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 20:45:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:45:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:45:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:45:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:45:09,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:09,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388725312] [2022-11-02 20:45:09,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388725312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:09,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:09,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101645193] [2022-11-02 20:45:09,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:09,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:09,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:09,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:09,324 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) [2022-11-02 20:45:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:09,736 INFO L93 Difference]: Finished difference Result 428 states and 526 transitions. [2022-11-02 20:45:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:45:09,737 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 [2022-11-02 20:45:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:09,740 INFO L225 Difference]: With dead ends: 428 [2022-11-02 20:45:09,741 INFO L226 Difference]: Without dead ends: 220 [2022-11-02 20:45:09,742 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:45:09,743 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 33 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:09,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 420 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:45:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-02 20:45:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2022-11-02 20:45:09,768 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) [2022-11-02 20:45:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2022-11-02 20:45:09,772 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 78 [2022-11-02 20:45:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:09,773 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2022-11-02 20:45:09,773 INFO L496 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) [2022-11-02 20:45:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2022-11-02 20:45:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:45:09,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:09,776 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:45:09,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:45:09,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash -391319208, now seen corresponding path program 1 times [2022-11-02 20:45:09,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:09,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135281498] [2022-11-02 20:45:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:09,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:45:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:10,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:45:10,059 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:45:10,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:45:10,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:45:10,067 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:45:10,071 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:45:10,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:45:10 BoogieIcfgContainer [2022-11-02 20:45:10,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:45:10,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:45:10,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:45:10,230 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:45:10,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:07" (3/4) ... [2022-11-02 20:45:10,233 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:45:10,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:45:10,234 INFO L158 Benchmark]: Toolchain (without parser) took 5540.50ms. Allocated memory was 96.5MB in the beginning and 176.2MB in the end (delta: 79.7MB). Free memory was 55.9MB in the beginning and 67.7MB in the end (delta: -11.7MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. [2022-11-02 20:45:10,235 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 69.0MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:45:10,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1784.76ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 55.6MB in the beginning and 77.6MB in the end (delta: -22.0MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2022-11-02 20:45:10,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.55ms. Allocated memory is still 123.7MB. Free memory was 77.6MB in the beginning and 72.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:45:10,237 INFO L158 Benchmark]: Boogie Preprocessor took 53.42ms. Allocated memory is still 123.7MB. Free memory was 72.3MB in the beginning and 68.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:45:10,238 INFO L158 Benchmark]: RCFGBuilder took 1216.26ms. Allocated memory is still 123.7MB. Free memory was 68.1MB in the beginning and 57.9MB in the end (delta: 10.1MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-11-02 20:45:10,238 INFO L158 Benchmark]: TraceAbstraction took 2360.07ms. Allocated memory was 123.7MB in the beginning and 176.2MB in the end (delta: 52.4MB). Free memory was 57.3MB in the beginning and 67.7MB in the end (delta: -10.4MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2022-11-02 20:45:10,239 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 176.2MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:45:10,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 69.0MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1784.76ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 55.6MB in the beginning and 77.6MB in the end (delta: -22.0MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.55ms. Allocated memory is still 123.7MB. Free memory was 77.6MB in the beginning and 72.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.42ms. Allocated memory is still 123.7MB. Free memory was 72.3MB in the beginning and 68.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1216.26ms. Allocated memory is still 123.7MB. Free memory was 68.1MB in the beginning and 57.9MB in the end (delta: 10.1MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2360.07ms. Allocated memory was 123.7MB in the beginning and 176.2MB in the end (delta: 52.4MB). Free memory was 57.3MB in the beginning and 67.7MB in the end (delta: -10.4MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 176.2MB. Free memory is still 67.7MB. 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___1=1, 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={4294967299:4294967304}, 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=1, 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={4294967299:4294967304}, 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=1, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, arg0={4294967300:4294967302}, arg0={4294967300:4294967302}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, bio={0:0}, disk={4294967298:0}, disk={4294967298:0}, 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:-3}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, arg0={4294967300:4294967302}, arg0={4294967300:4294967302}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, ldv_func_arg1={4294967300:4294967302}, ldv_func_arg1={4294967300:4294967302}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, bio={0:0}, disk={4294967298:0}, disk={4294967298:0}, 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:-3}, 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=1, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967304}, bio={0:0}, disk={4294967298:0}, disk={4294967298:0}, 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=1, vblk={0:-3}, 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)=0, \old(mode)=1, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967304}, bdev={4294967301:-2}, bdev={4294967301:-2}, cmd=1447184708, data=0, disk={4294967298:0}, err=1, features={14:0}, id_str={17:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=1, usr_data={0:0}, vblk={0:-3}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3935] return (err); [L3935] return (err); VAL [\old(cmd)=1447184708, \old(data)=0, \old(mode)=1, \result=1, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967304}, bdev={4294967301:-2}, bdev={4294967301:-2}, cmd=1447184708, data=0, disk={4294967298:0}, err=1, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=1, usr_data={0:0}, vblk={0:-3}, 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={4294967299:4294967304}, 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={4294967301:-2}, var_virtblk_ioctl_5_p1=1, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=0, 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={4294967299:4294967304}, 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={4294967301:-2}, var_virtblk_ioctl_5_p1=1, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=0, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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={4294967299:4294967304}, 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: 2.1s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 723 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 398 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 325 mSDtfsCounter, 136 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, 0.6s 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 [2022-11-02 20:45:10,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/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_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:45:12,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:45:12,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:45:12,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:45:12,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:45:12,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:45:12,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:45:12,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:45:12,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:45:12,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:45:12,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:45:12,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:45:12,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:45:12,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:45:12,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:45:12,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:45:12,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:45:12,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:45:12,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:45:12,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:45:12,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:45:12,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:45:12,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:45:12,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:45:12,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:45:12,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:45:12,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:45:12,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:45:12,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:45:13,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:45:13,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:45:13,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:45:13,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:45:13,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:45:13,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:45:13,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:45:13,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:45:13,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:45:13,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:45:13,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:45:13,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:45:13,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:45:13,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:45:13,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:45:13,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:45:13,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:45:13,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:45:13,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:45:13,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:45:13,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:45:13,071 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:45:13,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:45:13,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:45:13,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:45:13,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:45:13,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:45:13,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:45:13,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:45:13,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:45:13,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:45:13,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:45:13,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:45:13,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:45:13,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:45:13,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:45:13,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:13,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:45:13,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:45:13,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:45:13,077 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:45:13,077 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:45:13,077 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:45:13,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:45:13,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:45:13,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:45:13,078 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_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2022-11-02 20:45:13,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:45:13,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:45:13,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:45:13,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:45:13,491 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:45:13,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2022-11-02 20:45:13,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data/cc3e4dd88/abf37e78403742f68fab43eabdefb199/FLAG009851eb2 [2022-11-02 20:45:14,417 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:45:14,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2022-11-02 20:45:14,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data/cc3e4dd88/abf37e78403742f68fab43eabdefb199/FLAG009851eb2 [2022-11-02 20:45:14,501 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/data/cc3e4dd88/abf37e78403742f68fab43eabdefb199 [2022-11-02 20:45:14,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:45:14,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:45:14,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:14,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:45:14,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:45:14,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:14" (1/1) ... [2022-11-02 20:45:14,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5ac1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:14, skipping insertion in model container [2022-11-02 20:45:14,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:14" (1/1) ... [2022-11-02 20:45:14,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:45:14,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:45:15,657 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_43541d6a-9112-46bd-9096-8a4fa839043b/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2022-11-02 20:45:15,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:15,708 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:45:15,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:45:15,961 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_43541d6a-9112-46bd-9096-8a4fa839043b/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2022-11-02 20:45:15,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:15,998 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:45:16,294 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_43541d6a-9112-46bd-9096-8a4fa839043b/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2022-11-02 20:45:16,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:16,368 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:45:16,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16 WrapperNode [2022-11-02 20:45:16,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:16,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:16,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:45:16,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:45:16,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,540 INFO L138 Inliner]: procedures = 150, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 458 [2022-11-02 20:45:16,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:16,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:45:16,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:45:16,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:45:16,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,642 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:45:16,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:45:16,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:45:16,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:45:16,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (1/1) ... [2022-11-02 20:45:16,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:16,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:16,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:45:16,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:45:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:45:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-02 20:45:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2022-11-02 20:45:16,771 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2022-11-02 20:45:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-02 20:45:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2022-11-02 20:45:16,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2022-11-02 20:45:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:45:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:45:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:45:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:45:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:45:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:45:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:45:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:45:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2022-11-02 20:45:16,773 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2022-11-02 20:45:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:45:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:45:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-02 20:45:16,774 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-02 20:45:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-02 20:45:16,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-02 20:45:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-02 20:45:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-02 20:45:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:45:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:45:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:45:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:45:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-02 20:45:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-02 20:45:16,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-02 20:45:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:45:16,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:45:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-02 20:45:16,778 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-02 20:45:17,109 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:45:17,112 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:45:18,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:45:18,219 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:45:18,219 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:45:18,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:18 BoogieIcfgContainer [2022-11-02 20:45:18,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:45:18,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:45:18,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:45:18,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:45:18,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:45:14" (1/3) ... [2022-11-02 20:45:18,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c62d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:18, skipping insertion in model container [2022-11-02 20:45:18,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:16" (2/3) ... [2022-11-02 20:45:18,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c62d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:18, skipping insertion in model container [2022-11-02 20:45:18,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:18" (3/3) ... [2022-11-02 20:45:18,233 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2022-11-02 20:45:18,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:45:18,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:45:18,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:18,338 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78303bdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:18,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:45:18,344 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) [2022-11-02 20:45:18,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:45:18,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:18,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:18,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1549604235, now seen corresponding path program 1 times [2022-11-02 20:45:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:18,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049267236] [2022-11-02 20:45:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:18,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:18,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:18,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:18,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:45:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:18,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:45:18,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:18,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:18,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:18,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049267236] [2022-11-02 20:45:18,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049267236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:18,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:18,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:18,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673074204] [2022-11-02 20:45:18,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:18,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:18,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:18,926 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) [2022-11-02 20:45:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:19,070 INFO L93 Difference]: Finished difference Result 346 states and 438 transitions. [2022-11-02 20:45:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:19,073 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 [2022-11-02 20:45:19,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:19,085 INFO L225 Difference]: With dead ends: 346 [2022-11-02 20:45:19,085 INFO L226 Difference]: Without dead ends: 216 [2022-11-02 20:45:19,089 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:45:19,093 INFO L413 NwaCegarLoop]: 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 [2022-11-02 20:45:19,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 303 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:19,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-02 20:45:19,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-02 20:45:19,199 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) [2022-11-02 20:45:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 265 transitions. [2022-11-02 20:45:19,211 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 265 transitions. Word has length 15 [2022-11-02 20:45:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:19,215 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 265 transitions. [2022-11-02 20:45:19,216 INFO L496 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) [2022-11-02 20:45:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 265 transitions. [2022-11-02 20:45:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 20:45:19,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:19,221 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:45:19,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:19,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:19,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1763310802, now seen corresponding path program 1 times [2022-11-02 20:45:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:19,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556984475] [2022-11-02 20:45:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:19,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:19,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:19,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:19,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:45:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:19,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:45:19,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:45:20,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:20,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:45:20,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556984475] [2022-11-02 20:45:20,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556984475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:20,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:20,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:45:20,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406705057] [2022-11-02 20:45:20,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:20,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:45:20,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:45:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:45:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:45:20,040 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) [2022-11-02 20:45:20,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:20,099 INFO L93 Difference]: Finished difference Result 424 states and 520 transitions. [2022-11-02 20:45:20,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:45:20,100 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 [2022-11-02 20:45:20,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:20,102 INFO L225 Difference]: With dead ends: 424 [2022-11-02 20:45:20,102 INFO L226 Difference]: Without dead ends: 216 [2022-11-02 20:45:20,104 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:45:20,106 INFO L413 NwaCegarLoop]: 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 [2022-11-02 20:45:20,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 445 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-02 20:45:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-02 20:45:20,132 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) [2022-11-02 20:45:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2022-11-02 20:45:20,134 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 78 [2022-11-02 20:45:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:20,135 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2022-11-02 20:45:20,135 INFO L496 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) [2022-11-02 20:45:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2022-11-02 20:45:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:45:20,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:20,139 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:45:20,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:20,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:20,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:20,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash -251868651, now seen corresponding path program 1 times [2022-11-02 20:45:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:45:20,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747964650] [2022-11-02 20:45:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:20,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:45:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:45:20,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:45:20,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:45:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:21,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:45:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:21,909 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-02 20:45:21,909 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:45:21,911 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:45:21,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:22,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:45:22,140 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:45:22,145 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:45:22,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:45:22 BoogieIcfgContainer [2022-11-02 20:45:22,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:45:22,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:45:22,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:45:22,332 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:45:22,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:18" (3/4) ... [2022-11-02 20:45:22,337 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:45:22,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:45:22,338 INFO L158 Benchmark]: Toolchain (without parser) took 7829.43ms. Allocated memory was 65.0MB in the beginning and 211.8MB in the end (delta: 146.8MB). Free memory was 38.3MB in the beginning and 151.1MB in the end (delta: -112.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-11-02 20:45:22,343 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 45.7MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:45:22,348 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1856.27ms. Allocated memory was 65.0MB in the beginning and 127.9MB in the end (delta: 62.9MB). Free memory was 38.2MB in the beginning and 61.7MB in the end (delta: -23.5MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2022-11-02 20:45:22,351 INFO L158 Benchmark]: Boogie Procedure Inliner took 174.57ms. Allocated memory is still 127.9MB. Free memory was 61.7MB in the beginning and 85.2MB in the end (delta: -23.5MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-11-02 20:45:22,351 INFO L158 Benchmark]: Boogie Preprocessor took 107.78ms. Allocated memory is still 127.9MB. Free memory was 85.2MB in the beginning and 80.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:45:22,352 INFO L158 Benchmark]: RCFGBuilder took 1568.61ms. Allocated memory is still 127.9MB. Free memory was 80.4MB in the beginning and 60.8MB in the end (delta: 19.7MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2022-11-02 20:45:22,352 INFO L158 Benchmark]: TraceAbstraction took 4105.33ms. Allocated memory was 127.9MB in the beginning and 211.8MB in the end (delta: 83.9MB). Free memory was 60.0MB in the beginning and 152.2MB in the end (delta: -92.1MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2022-11-02 20:45:22,355 INFO L158 Benchmark]: Witness Printer took 5.61ms. Allocated memory is still 211.8MB. Free memory was 152.2MB in the beginning and 151.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:45:22,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 45.7MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1856.27ms. Allocated memory was 65.0MB in the beginning and 127.9MB in the end (delta: 62.9MB). Free memory was 38.2MB in the beginning and 61.7MB in the end (delta: -23.5MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 174.57ms. Allocated memory is still 127.9MB. Free memory was 61.7MB in the beginning and 85.2MB in the end (delta: -23.5MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.78ms. Allocated memory is still 127.9MB. Free memory was 85.2MB in the beginning and 80.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1568.61ms. Allocated memory is still 127.9MB. Free memory was 80.4MB in the beginning and 60.8MB in the end (delta: 19.7MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4105.33ms. Allocated memory was 127.9MB in the beginning and 211.8MB in the end (delta: 83.9MB). Free memory was 60.0MB in the beginning and 152.2MB in the end (delta: -92.1MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. * Witness Printer took 5.61ms. Allocated memory is still 211.8MB. Free memory was 152.2MB in the beginning and 151.1MB in the end (delta: 1.0MB). 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={0:0}, arg0={0:0}, arg1={549755813895:0}, arg1={549755813895:0}, 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={549755813895:0}, id_str={549755813895:0}, 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={0:0}, arg0={0:0}, 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={0:0}, ldv_func_arg1={0:0}, 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={549755813895:0}, id_str={549755813895:0}, 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={549755813895:0}, id_str={549755813895:0}, 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={549755813895:0}, 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: 3.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 1.1s 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 [2022-11-02 20:45:22,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43541d6a-9112-46bd-9096-8a4fa839043b/bin/uautomizer-Dbtcem3rbc/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample