./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 173e3943 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 0.2.1-dev-173e394 [2021-11-06 12:45:22,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 12:45:22,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 12:45:22,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 12:45:22,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 12:45:22,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 12:45:22,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 12:45:22,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 12:45:22,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 12:45:22,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 12:45:22,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 12:45:22,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 12:45:22,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 12:45:22,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 12:45:22,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 12:45:22,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 12:45:22,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 12:45:22,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 12:45:22,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 12:45:22,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 12:45:22,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 12:45:22,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 12:45:22,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 12:45:22,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 12:45:22,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 12:45:22,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 12:45:22,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 12:45:22,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 12:45:22,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 12:45:22,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 12:45:22,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 12:45:22,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 12:45:22,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 12:45:22,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 12:45:22,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 12:45:22,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 12:45:22,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 12:45:22,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 12:45:22,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 12:45:22,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 12:45:22,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 12:45:22,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 12:45:22,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 12:45:22,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 12:45:22,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 12:45:22,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 12:45:22,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 12:45:22,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 12:45:22,461 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 12:45:22,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 12:45:22,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 12:45:22,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 12:45:22,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 12:45:22,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 12:45:22,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 12:45:22,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 12:45:22,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 12:45:22,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 12:45:22,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 12:45:22,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 12:45:22,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 12:45:22,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 12:45:22,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 12:45:22,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 12:45:22,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 12:45:22,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 12:45:22,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 12:45:22,464 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 12:45:22,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 12:45:22,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 12:45:22,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 12:45:22,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-06 12:45:22,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 12:45:22,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 12:45:22,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 12:45:22,695 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 12:45:22,696 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 12:45:22,697 INFO L432 ainManager$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 [2021-11-06 12:45:22,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3ab3468/ee198c7aec4c4c6183621399854f75ce/FLAG1f058ba3d [2021-11-06 12:45:23,325 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 12:45:23,326 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 [2021-11-06 12:45:23,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3ab3468/ee198c7aec4c4c6183621399854f75ce/FLAG1f058ba3d [2021-11-06 12:45:23,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3ab3468/ee198c7aec4c4c6183621399854f75ce [2021-11-06 12:45:23,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 12:45:23,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 12:45:23,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 12:45:23,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 12:45:23,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 12:45:23,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:45:23" (1/1) ... [2021-11-06 12:45:23,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41298017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:23, skipping insertion in model container [2021-11-06 12:45:23,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:45:23" (1/1) ... [2021-11-06 12:45:23,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 12:45:23,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 12:45:24,456 WARN L228 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] [2021-11-06 12:45:24,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 12:45:24,485 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 12:45:24,671 WARN L228 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] [2021-11-06 12:45:24,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 12:45:24,702 INFO L208 MainTranslator]: Completed translation [2021-11-06 12:45:24,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24 WrapperNode [2021-11-06 12:45:24,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 12:45:24,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 12:45:24,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 12:45:24,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 12:45:24,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 12:45:24,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 12:45:24,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 12:45:24,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 12:45:24,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 12:45:24,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 12:45:24,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 12:45:24,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 12:45:24,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (1/1) ... [2021-11-06 12:45:24,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 12:45:24,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:45:24,896 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) [2021-11-06 12:45:24,905 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 [2021-11-06 12:45:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 12:45:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 12:45:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 12:45:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 12:45:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 12:45:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 12:45:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 12:45:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 12:45:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 12:45:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 12:45:25,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 12:45:25,574 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-11-06 12:45:25,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:45:25 BoogieIcfgContainer [2021-11-06 12:45:25,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 12:45:25,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 12:45:25,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 12:45:25,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 12:45:25,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 12:45:23" (1/3) ... [2021-11-06 12:45:25,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252ed1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:45:25, skipping insertion in model container [2021-11-06 12:45:25,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:24" (2/3) ... [2021-11-06 12:45:25,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252ed1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:45:25, skipping insertion in model container [2021-11-06 12:45:25,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:45:25" (3/3) ... [2021-11-06 12:45:25,584 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-06 12:45:25,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 12:45:25,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 12:45:25,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 12:45:25,625 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 12:45:25,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 12:45:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-06 12:45:25,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:45:25,640 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 12:45:25,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 12:45:25,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:45:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash -653166678, now seen corresponding path program 1 times [2021-11-06 12:45:25,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:45:25,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760113847] [2021-11-06 12:45:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:45:25,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:45:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:45:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:45:25,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:45:25,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760113847] [2021-11-06 12:45:25,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760113847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:45:25,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:45:25,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 12:45:25,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368837404] [2021-11-06 12:45:25,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:45:25,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:45:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:45:25,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:45:25,897 INFO L87 Difference]: Start difference. First operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:45:25,951 INFO L93 Difference]: Finished difference Result 235 states and 307 transitions. [2021-11-06 12:45:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:45:25,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-06 12:45:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:45:25,960 INFO L225 Difference]: With dead ends: 235 [2021-11-06 12:45:25,960 INFO L226 Difference]: Without dead ends: 148 [2021-11-06 12:45:25,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:45:25,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-06 12:45:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-06 12:45:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.273972602739726) internal successors, (186), 147 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:26,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2021-11-06 12:45:26,019 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 9 [2021-11-06 12:45:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:45:26,020 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2021-11-06 12:45:26,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2021-11-06 12:45:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 12:45:26,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:45:26,022 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 12:45:26,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 12:45:26,023 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 12:45:26,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:45:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash 950528437, now seen corresponding path program 1 times [2021-11-06 12:45:26,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:45:26,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952266467] [2021-11-06 12:45:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:45:26,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:45:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:45:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 12:45:26,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:45:26,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952266467] [2021-11-06 12:45:26,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952266467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:45:26,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:45:26,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 12:45:26,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518455276] [2021-11-06 12:45:26,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:45:26,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:45:26,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:45:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:45:26,154 INFO L87 Difference]: Start difference. First operand 148 states and 186 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:45:26,186 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2021-11-06 12:45:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:45:26,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-06 12:45:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:45:26,189 INFO L225 Difference]: With dead ends: 290 [2021-11-06 12:45:26,189 INFO L226 Difference]: Without dead ends: 148 [2021-11-06 12:45:26,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:45:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-06 12:45:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-06 12:45:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.2671232876712328) internal successors, (185), 147 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2021-11-06 12:45:26,206 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 40 [2021-11-06 12:45:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:45:26,206 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2021-11-06 12:45:26,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2021-11-06 12:45:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 12:45:26,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:45:26,208 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 12:45:26,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 12:45:26,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 12:45:26,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:45:26,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1298860141, now seen corresponding path program 1 times [2021-11-06 12:45:26,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:45:26,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643907340] [2021-11-06 12:45:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:45:26,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:45:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-06 12:45:26,332 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-06 12:45:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-06 12:45:26,460 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-06 12:45:26,460 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-06 12:45:26,461 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 12:45:26,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 12:45:26,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 12:45:26,465 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-06 12:45:26,466 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-06 12:45:26,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 12:45:26 BoogieIcfgContainer [2021-11-06 12:45:26,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-06 12:45:26,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-06 12:45:26,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-06 12:45:26,556 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-06 12:45:26,556 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:45:25" (3/4) ... [2021-11-06 12:45:26,558 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-06 12:45:26,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-06 12:45:26,560 INFO L168 Benchmark]: Toolchain (without parser) took 2771.20 ms. Allocated memory was 94.4 MB in the beginning and 188.7 MB in the end (delta: 94.4 MB). Free memory was 56.4 MB in the beginning and 118.4 MB in the end (delta: -62.1 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:26,561 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory was 52.2 MB in the beginning and 52.2 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 12:45:26,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 913.84 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 56.4 MB in the beginning and 85.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:26,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.60 ms. Allocated memory is still 136.3 MB. Free memory was 85.7 MB in the beginning and 80.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:26,565 INFO L168 Benchmark]: Boogie Preprocessor took 68.95 ms. Allocated memory is still 136.3 MB. Free memory was 80.2 MB in the beginning and 76.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:26,565 INFO L168 Benchmark]: RCFGBuilder took 703.13 ms. Allocated memory is still 136.3 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:26,566 INFO L168 Benchmark]: TraceAbstraction took 977.09 ms. Allocated memory was 136.3 MB in the beginning and 188.7 MB in the end (delta: 52.4 MB). Free memory was 73.7 MB in the beginning and 118.4 MB in the end (delta: -44.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:26,567 INFO L168 Benchmark]: Witness Printer took 2.74 ms. Allocated memory is still 188.7 MB. Free memory is still 118.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 12:45:26,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory was 52.2 MB in the beginning and 52.2 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 913.84 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 56.4 MB in the beginning and 85.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.60 ms. Allocated memory is still 136.3 MB. Free memory was 85.7 MB in the beginning and 80.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.95 ms. Allocated memory is still 136.3 MB. Free memory was 80.2 MB in the beginning and 76.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 703.13 ms. Allocated memory is still 136.3 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 977.09 ms. Allocated memory was 136.3 MB in the beginning and 188.7 MB in the end (delta: 52.4 MB). Free memory was 73.7 MB in the beginning and 118.4 MB in the end (delta: -44.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. * Witness Printer took 2.74 ms. Allocated memory is still 188.7 MB. Free memory is still 118.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [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 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4535] return __VERIFIER_nondet_int(); [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [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={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4229] tmp___0 = __VERIFIER_nondet_int() [L4231] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [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 [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 [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4351] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4289] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [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 [L4437] return __VERIFIER_nondet_int(); [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3935] return (err); [L3935] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [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={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 98 SDslu, 288 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-06 12:45:26,602 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 0.2.1-dev-173e394 [2021-11-06 12:45:28,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 12:45:28,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 12:45:28,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 12:45:28,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 12:45:28,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 12:45:28,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 12:45:28,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 12:45:28,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 12:45:28,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 12:45:28,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 12:45:28,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 12:45:28,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 12:45:28,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 12:45:28,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 12:45:28,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 12:45:28,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 12:45:28,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 12:45:28,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 12:45:28,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 12:45:28,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 12:45:28,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 12:45:28,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 12:45:28,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 12:45:28,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 12:45:28,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 12:45:28,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 12:45:28,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 12:45:28,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 12:45:28,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 12:45:28,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 12:45:28,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 12:45:28,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 12:45:28,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 12:45:28,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 12:45:28,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 12:45:28,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 12:45:28,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 12:45:28,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 12:45:28,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 12:45:28,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 12:45:28,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-06 12:45:28,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 12:45:28,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 12:45:28,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 12:45:28,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 12:45:28,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 12:45:28,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 12:45:28,265 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 12:45:28,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 12:45:28,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 12:45:28,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 12:45:28,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 12:45:28,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 12:45:28,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-06 12:45:28,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-06 12:45:28,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 12:45:28,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 12:45:28,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 12:45:28,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 12:45:28,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 12:45:28,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 12:45:28,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 12:45:28,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 12:45:28,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 12:45:28,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 12:45:28,268 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-06 12:45:28,268 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-06 12:45:28,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 12:45:28,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 12:45:28,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 12:45:28,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 12:45:28,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-06 12:45:28,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-06 12:45:28,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 12:45:28,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 12:45:28,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 12:45:28,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 12:45:28,573 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 12:45:28,574 INFO L432 ainManager$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 [2021-11-06 12:45:28,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2455fb5/ebe75942422644099ed54acf9d9bebef/FLAGbab9dd5c0 [2021-11-06 12:45:29,185 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 12:45:29,186 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 [2021-11-06 12:45:29,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2455fb5/ebe75942422644099ed54acf9d9bebef/FLAGbab9dd5c0 [2021-11-06 12:45:29,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2455fb5/ebe75942422644099ed54acf9d9bebef [2021-11-06 12:45:29,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 12:45:29,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 12:45:29,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 12:45:29,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 12:45:29,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 12:45:29,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:45:29" (1/1) ... [2021-11-06 12:45:29,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ca7ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:29, skipping insertion in model container [2021-11-06 12:45:29,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:45:29" (1/1) ... [2021-11-06 12:45:29,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 12:45:29,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 12:45:30,239 WARN L228 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] [2021-11-06 12:45:30,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 12:45:30,272 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 12:45:30,446 WARN L228 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] [2021-11-06 12:45:30,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 12:45:30,490 INFO L208 MainTranslator]: Completed translation [2021-11-06 12:45:30,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30 WrapperNode [2021-11-06 12:45:30,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 12:45:30,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 12:45:30,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 12:45:30,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 12:45:30,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 12:45:30,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 12:45:30,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 12:45:30,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 12:45:30,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 12:45:30,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 12:45:30,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 12:45:30,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 12:45:30,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (1/1) ... [2021-11-06 12:45:30,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 12:45:30,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:45:30,631 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) [2021-11-06 12:45:30,639 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 [2021-11-06 12:45:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-06 12:45:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-06 12:45:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-06 12:45:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 12:45:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 12:45:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 12:45:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-06 12:45:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-06 12:45:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 12:45:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-06 12:45:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 12:45:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-06 12:45:30,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-06 12:45:30,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 12:45:30,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 12:45:31,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 12:45:31,606 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-11-06 12:45:31,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:45:31 BoogieIcfgContainer [2021-11-06 12:45:31,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 12:45:31,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 12:45:31,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 12:45:31,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 12:45:31,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 12:45:29" (1/3) ... [2021-11-06 12:45:31,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6197ba41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:45:31, skipping insertion in model container [2021-11-06 12:45:31,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:45:30" (2/3) ... [2021-11-06 12:45:31,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6197ba41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:45:31, skipping insertion in model container [2021-11-06 12:45:31,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:45:31" (3/3) ... [2021-11-06 12:45:31,613 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-06 12:45:31,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 12:45:31,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 12:45:31,649 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 12:45:31,653 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 12:45:31,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 12:45:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-06 12:45:31,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:45:31,675 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 12:45:31,675 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 12:45:31,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:45:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash -653166678, now seen corresponding path program 1 times [2021-11-06 12:45:31,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:45:31,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485187169] [2021-11-06 12:45:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:45:31,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:45:31,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:45:31,690 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) [2021-11-06 12:45:31,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-06 12:45:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:45:31,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 12:45:31,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:45:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:45:31,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:45:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:45:32,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:45:32,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485187169] [2021-11-06 12:45:32,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485187169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:45:32,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:45:32,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 12:45:32,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563107596] [2021-11-06 12:45:32,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:45:32,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:45:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:45:32,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:45:32,033 INFO L87 Difference]: Start difference. First operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:45:32,090 INFO L93 Difference]: Finished difference Result 235 states and 307 transitions. [2021-11-06 12:45:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:45:32,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-06 12:45:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:45:32,099 INFO L225 Difference]: With dead ends: 235 [2021-11-06 12:45:32,099 INFO L226 Difference]: Without dead ends: 148 [2021-11-06 12:45:32,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:45:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-06 12:45:32,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-06 12:45:32,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.273972602739726) internal successors, (186), 147 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2021-11-06 12:45:32,149 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 9 [2021-11-06 12:45:32,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:45:32,150 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2021-11-06 12:45:32,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:32,150 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2021-11-06 12:45:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 12:45:32,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:45:32,152 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 12:45:32,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-06 12:45:32,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:45:32,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 12:45:32,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:45:32,363 INFO L85 PathProgramCache]: Analyzing trace with hash 950528437, now seen corresponding path program 1 times [2021-11-06 12:45:32,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:45:32,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367038635] [2021-11-06 12:45:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:45:32,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:45:32,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:45:32,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:45:32,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-06 12:45:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:45:32,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 12:45:32,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:45:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 12:45:32,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:45:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 12:45:32,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:45:32,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367038635] [2021-11-06 12:45:32,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367038635] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:45:32,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:45:32,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 12:45:32,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714726736] [2021-11-06 12:45:32,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 12:45:32,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:45:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 12:45:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:45:32,816 INFO L87 Difference]: Start difference. First operand 148 states and 186 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:45:32,836 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2021-11-06 12:45:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:45:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-06 12:45:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:45:32,837 INFO L225 Difference]: With dead ends: 290 [2021-11-06 12:45:32,837 INFO L226 Difference]: Without dead ends: 148 [2021-11-06 12:45:32,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:45:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-06 12:45:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-06 12:45:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.2671232876712328) internal successors, (185), 147 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2021-11-06 12:45:32,844 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 40 [2021-11-06 12:45:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:45:32,845 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2021-11-06 12:45:32,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 12:45:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2021-11-06 12:45:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 12:45:32,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:45:32,846 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 12:45:32,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-06 12:45:33,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:45:33,055 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 12:45:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:45:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1298860141, now seen corresponding path program 1 times [2021-11-06 12:45:33,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:45:33,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697422760] [2021-11-06 12:45:33,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:45:33,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:45:33,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:45:33,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:45:33,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-06 12:45:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-06 12:45:33,879 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-06 12:45:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-06 12:45:35,052 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-06 12:45:35,052 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-06 12:45:35,053 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 12:45:35,054 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 12:45:35,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-06 12:45:35,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:45:35,264 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-06 12:45:35,265 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-06 12:45:35,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 12:45:35 BoogieIcfgContainer [2021-11-06 12:45:35,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-06 12:45:35,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-06 12:45:35,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-06 12:45:35,346 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-06 12:45:35,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:45:31" (3/4) ... [2021-11-06 12:45:35,348 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-06 12:45:35,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-06 12:45:35,349 INFO L168 Benchmark]: Toolchain (without parser) took 5740.56 ms. Allocated memory was 54.5 MB in the beginning and 121.6 MB in the end (delta: 67.1 MB). Free memory was 27.1 MB in the beginning and 77.1 MB in the end (delta: -49.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:35,350 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 46.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 12:45:35,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 882.82 ms. Allocated memory was 54.5 MB in the beginning and 96.5 MB in the end (delta: 41.9 MB). Free memory was 26.9 MB in the beginning and 54.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:35,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.46 ms. Allocated memory is still 96.5 MB. Free memory was 54.5 MB in the beginning and 49.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:35,351 INFO L168 Benchmark]: Boogie Preprocessor took 34.32 ms. Allocated memory is still 96.5 MB. Free memory was 49.1 MB in the beginning and 44.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:35,351 INFO L168 Benchmark]: RCFGBuilder took 1001.86 ms. Allocated memory is still 96.5 MB. Free memory was 44.9 MB in the beginning and 42.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:35,352 INFO L168 Benchmark]: TraceAbstraction took 3736.28 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 42.4 MB in the beginning and 77.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-11-06 12:45:35,352 INFO L168 Benchmark]: Witness Printer took 2.52 ms. Allocated memory is still 121.6 MB. Free memory is still 77.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 12:45:35,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 46.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 882.82 ms. Allocated memory was 54.5 MB in the beginning and 96.5 MB in the end (delta: 41.9 MB). Free memory was 26.9 MB in the beginning and 54.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.46 ms. Allocated memory is still 96.5 MB. Free memory was 54.5 MB in the beginning and 49.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.32 ms. Allocated memory is still 96.5 MB. Free memory was 49.1 MB in the beginning and 44.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1001.86 ms. Allocated memory is still 96.5 MB. Free memory was 44.9 MB in the beginning and 42.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3736.28 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 42.4 MB in the beginning and 77.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * Witness Printer took 2.52 ms. Allocated memory is still 121.6 MB. Free memory is still 77.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [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 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4535] return __VERIFIER_nondet_int(); [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [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={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [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={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [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 [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 [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4351] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4289] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [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 [L4437] return __VERIFIER_nondet_int(); [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L3935] return (err); [L3935] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [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={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={4611686018427387906:0}, id_table={-4179340454199820286:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7349874591868649474:0}, virtio_blk={4899916394579099650:0}] - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 98 SDslu, 389 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 4 NumberOfNonLiveVariables, 527 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-06 12:45:35,381 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: UNKNOWN: Overapproximated counterexample