./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 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:55:34,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:55:34,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:55:34,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:55:34,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:55:34,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:55:34,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:55:34,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:55:34,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:55:34,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:55:34,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:55:34,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:55:34,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:55:34,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:55:34,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:55:34,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:55:34,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:55:34,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:55:34,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:55:34,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:55:34,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:55:34,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:55:34,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:55:34,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:55:34,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:55:34,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:55:34,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:55:34,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:55:34,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:55:34,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:55:34,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:55:34,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:55:34,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:55:34,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:55:34,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:55:34,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:55:34,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:55:34,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:55:34,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:55:34,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:55:34,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:55:34,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-15 12:55:34,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:55:34,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:55:34,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:55:34,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:55:34,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:55:34,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:55:34,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:55:34,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:55:34,846 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:55:34,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:55:34,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:55:34,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:55:34,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:55:34,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:55:34,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:55:34,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:55:34,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:55:34,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:55:34,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:55:34,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:55:34,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:55:34,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:55:34,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:55:34,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:55:34,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:55:34,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:55:34,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:55:34,850 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:55:34,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:55:34,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:55:34,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:55:34,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-12-15 12:55:35,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:55:35,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:55:35,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:55:35,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:55:35,131 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:55:35,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-15 12:55:35,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267929752/3c6410260ac64021908b80dfae6ee894/FLAGee5ebad0d [2021-12-15 12:55:35,732 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:55:35,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-15 12:55:35,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267929752/3c6410260ac64021908b80dfae6ee894/FLAGee5ebad0d [2021-12-15 12:55:35,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267929752/3c6410260ac64021908b80dfae6ee894 [2021-12-15 12:55:35,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:55:35,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:55:35,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:55:35,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:55:35,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:55:35,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:55:35" (1/1) ... [2021-12-15 12:55:35,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b978aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:35, skipping insertion in model container [2021-12-15 12:55:35,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:55:35" (1/1) ... [2021-12-15 12:55:35,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:55:36,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:55:36,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-15 12:55:36,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:55:36,956 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:55:37,186 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-15 12:55:37,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:55:37,243 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:55:37,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37 WrapperNode [2021-12-15 12:55:37,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:55:37,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:55:37,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:55:37,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:55:37,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,355 INFO L137 Inliner]: procedures = 143, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 484 [2021-12-15 12:55:37,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:55:37,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:55:37,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:55:37,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:55:37,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:55:37,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:55:37,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:55:37,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:55:37,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (1/1) ... [2021-12-15 12:55:37,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:55:37,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:55:37,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 12:55:37,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 12:55:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-12-15 12:55:37,517 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-12-15 12:55:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 12:55:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-12-15 12:55:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-12-15 12:55:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-15 12:55:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-15 12:55:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 12:55:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-15 12:55:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-15 12:55:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-15 12:55:37,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-15 12:55:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 12:55:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:55:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-12-15 12:55:37,519 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-12-15 12:55:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:55:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 12:55:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-15 12:55:37,520 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-15 12:55:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-15 12:55:37,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-15 12:55:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:55:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 12:55:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:55:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-15 12:55:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-15 12:55:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:55:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:55:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-15 12:55:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-15 12:55:37,752 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:55:37,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:55:38,070 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:55:38,076 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:55:38,076 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 12:55:38,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:55:38 BoogieIcfgContainer [2021-12-15 12:55:38,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:55:38,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:55:38,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:55:38,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:55:38,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:55:35" (1/3) ... [2021-12-15 12:55:38,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156943dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:55:38, skipping insertion in model container [2021-12-15 12:55:38,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:37" (2/3) ... [2021-12-15 12:55:38,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156943dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:55:38, skipping insertion in model container [2021-12-15 12:55:38,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:55:38" (3/3) ... [2021-12-15 12:55:38,084 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-15 12:55:38,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:55:38,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 12:55:38,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:55:38,134 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 12:55:38,134 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 12:55:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-15 12:55:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 12:55:38,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:55:38,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:55:38,163 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:55:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:55:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1803778122, now seen corresponding path program 1 times [2021-12-15 12:55:38,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:55:38,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597444722] [2021-12-15 12:55:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:55:38,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:55:38,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:55:38,254 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 12:55:38,264 INFO L158 Benchmark]: Toolchain (without parser) took 2301.91ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 65.9MB in the beginning and 72.8MB in the end (delta: -6.9MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-12-15 12:55:38,265 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:55:38,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1282.75ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 65.7MB in the beginning and 90.0MB in the end (delta: -24.3MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-12-15 12:55:38,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.51ms. Allocated memory is still 132.1MB. Free memory was 90.0MB in the beginning and 84.4MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 12:55:38,267 INFO L158 Benchmark]: Boogie Preprocessor took 82.20ms. Allocated memory is still 132.1MB. Free memory was 84.4MB in the beginning and 80.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:55:38,268 INFO L158 Benchmark]: RCFGBuilder took 638.30ms. Allocated memory is still 132.1MB. Free memory was 80.9MB in the beginning and 84.0MB in the end (delta: -3.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2021-12-15 12:55:38,272 INFO L158 Benchmark]: TraceAbstraction took 182.81ms. Allocated memory is still 132.1MB. Free memory was 84.0MB in the beginning and 72.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:55:38,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1282.75ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 65.7MB in the beginning and 90.0MB in the end (delta: -24.3MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.51ms. Allocated memory is still 132.1MB. Free memory was 90.0MB in the beginning and 84.4MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.20ms. Allocated memory is still 132.1MB. Free memory was 84.4MB in the beginning and 80.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 638.30ms. Allocated memory is still 132.1MB. Free memory was 80.9MB in the beginning and 84.0MB in the end (delta: -3.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * TraceAbstraction took 182.81ms. Allocated memory is still 132.1MB. Free memory was 84.0MB in the beginning and 72.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:55:38,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:55:40,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:55:40,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:55:40,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:55:40,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:55:40,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:55:40,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:55:40,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:55:40,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:55:40,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:55:40,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:55:40,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:55:40,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:55:40,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:55:40,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:55:40,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:55:40,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:55:40,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:55:40,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:55:40,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:55:40,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:55:40,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:55:40,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:55:40,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:55:40,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:55:40,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:55:40,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:55:40,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:55:40,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:55:40,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:55:40,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:55:40,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:55:40,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:55:40,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:55:40,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:55:40,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:55:40,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:55:40,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:55:40,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:55:40,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:55:40,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:55:40,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-15 12:55:40,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:55:40,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:55:40,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:55:40,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:55:40,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:55:40,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:55:40,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:55:40,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:55:40,374 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:55:40,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:55:40,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:55:40,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:55:40,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:55:40,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:55:40,375 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:55:40,376 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:55:40,376 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:55:40,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:55:40,376 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:55:40,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:55:40,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:55:40,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:55:40,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:55:40,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:55:40,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:55:40,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:55:40,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:55:40,378 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:55:40,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:55:40,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:55:40,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:55:40,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:55:40,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:55:40,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:55:40,379 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-12-15 12:55:40,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:55:40,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:55:40,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:55:40,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:55:40,695 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:55:40,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-15 12:55:40,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e795c4b87/f2ca37c1940944bb9677dd3aa1163c9e/FLAG030bc84de [2021-12-15 12:55:41,455 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:55:41,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-15 12:55:41,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e795c4b87/f2ca37c1940944bb9677dd3aa1163c9e/FLAG030bc84de [2021-12-15 12:55:41,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e795c4b87/f2ca37c1940944bb9677dd3aa1163c9e [2021-12-15 12:55:41,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:55:41,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:55:41,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:55:41,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:55:41,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:55:41,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:55:41" (1/1) ... [2021-12-15 12:55:41,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea1ea52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:41, skipping insertion in model container [2021-12-15 12:55:41,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:55:41" (1/1) ... [2021-12-15 12:55:41,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:55:41,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:55:42,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-15 12:55:42,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:55:42,740 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 12:55:42,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:55:42,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-15 12:55:42,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:55:42,905 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:55:43,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-15 12:55:43,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:55:43,153 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:55:43,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43 WrapperNode [2021-12-15 12:55:43,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:55:43,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:55:43,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:55:43,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:55:43,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,294 INFO L137 Inliner]: procedures = 150, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 458 [2021-12-15 12:55:43,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:55:43,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:55:43,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:55:43,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:55:43,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:55:43,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:55:43,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:55:43,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:55:43,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (1/1) ... [2021-12-15 12:55:43,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:55:43,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:55:43,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 12:55:43,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 12:55:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 12:55:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-15 12:55:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-12-15 12:55:43,476 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-12-15 12:55:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-15 12:55:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-12-15 12:55:43,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-12-15 12:55:43,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-15 12:55:43,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-15 12:55:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-15 12:55:43,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-15 12:55:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-15 12:55:43,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-15 12:55:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 12:55:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:55:43,477 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-12-15 12:55:43,478 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-12-15 12:55:43,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:55:43,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 12:55:43,478 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-15 12:55:43,478 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-15 12:55:43,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-15 12:55:43,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-15 12:55:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 12:55:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-15 12:55:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:55:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 12:55:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 12:55:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:55:43,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-15 12:55:43,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-15 12:55:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-15 12:55:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:55:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:55:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-15 12:55:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-15 12:55:43,751 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:55:43,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:55:44,287 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:55:44,294 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:55:44,294 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 12:55:44,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:55:44 BoogieIcfgContainer [2021-12-15 12:55:44,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:55:44,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:55:44,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:55:44,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:55:44,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:55:41" (1/3) ... [2021-12-15 12:55:44,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a4e5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:55:44, skipping insertion in model container [2021-12-15 12:55:44,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:55:43" (2/3) ... [2021-12-15 12:55:44,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a4e5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:55:44, skipping insertion in model container [2021-12-15 12:55:44,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:55:44" (3/3) ... [2021-12-15 12:55:44,303 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-15 12:55:44,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:55:44,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 12:55:44,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:55:44,351 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 12:55:44,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 12:55:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-15 12:55:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 12:55:44,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:55:44,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:55:44,377 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:55:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:55:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1549604235, now seen corresponding path program 1 times [2021-12-15 12:55:44,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:55:44,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057125959] [2021-12-15 12:55:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:55:44,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:55:44,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:55:44,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 12:55:44,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 12:55:44,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 12:55:44,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 12:55:44,736 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 12:55:44,739 INFO L158 Benchmark]: Toolchain (without parser) took 2967.38ms. Allocated memory was 58.7MB in the beginning and 117.4MB in the end (delta: 58.7MB). Free memory was 31.4MB in the beginning and 72.6MB in the end (delta: -41.2MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2021-12-15 12:55:44,740 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.6MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:55:44,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1381.55ms. Allocated memory was 58.7MB in the beginning and 96.5MB in the end (delta: 37.7MB). Free memory was 31.2MB in the beginning and 38.5MB in the end (delta: -7.3MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2021-12-15 12:55:44,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.50ms. Allocated memory is still 96.5MB. Free memory was 38.5MB in the beginning and 51.0MB in the end (delta: -12.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:55:44,741 INFO L158 Benchmark]: Boogie Preprocessor took 101.80ms. Allocated memory is still 96.5MB. Free memory was 51.0MB in the beginning and 46.8MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:55:44,742 INFO L158 Benchmark]: RCFGBuilder took 894.17ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 46.6MB in the beginning and 57.8MB in the end (delta: -11.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 12:55:44,742 INFO L158 Benchmark]: TraceAbstraction took 440.13ms. Allocated memory is still 117.4MB. Free memory was 57.2MB in the beginning and 72.6MB in the end (delta: -15.4MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-12-15 12:55:44,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.6MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1381.55ms. Allocated memory was 58.7MB in the beginning and 96.5MB in the end (delta: 37.7MB). Free memory was 31.2MB in the beginning and 38.5MB in the end (delta: -7.3MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 143.50ms. Allocated memory is still 96.5MB. Free memory was 38.5MB in the beginning and 51.0MB in the end (delta: -12.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 101.80ms. Allocated memory is still 96.5MB. Free memory was 51.0MB in the beginning and 46.8MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 894.17ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 46.6MB in the beginning and 57.8MB in the end (delta: -11.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 440.13ms. Allocated memory is still 117.4MB. Free memory was 57.2MB in the beginning and 72.6MB in the end (delta: -15.4MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:55:44,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable