./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f04f938fee3705b6ab112999ad746b29d3f93a10 ........................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f04f938fee3705b6ab112999ad746b29d3f93a10 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:18:02,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:18:02,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:18:02,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:18:02,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:18:02,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:18:02,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:18:02,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:18:02,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:18:02,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:18:02,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:18:02,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:18:02,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:18:02,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:18:02,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:18:02,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:18:02,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:18:02,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:18:02,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:18:02,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:18:02,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:18:02,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:18:02,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:18:02,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:18:02,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:18:02,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:18:02,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:18:02,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:18:02,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:18:02,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:18:02,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:18:02,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:18:02,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:18:02,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:18:02,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:18:02,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:18:02,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:18:02,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:18:02,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:18:02,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:18:02,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:18:02,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf [2020-12-09 12:18:02,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:18:02,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:18:02,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:18:02,184 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:18:02,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:18:02,184 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:18:02,185 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:18:02,185 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:18:02,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:18:02,185 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:18:02,185 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:18:02,185 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:18:02,185 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:18:02,186 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:18:02,186 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:18:02,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:18:02,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:18:02,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:18:02,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:18:02,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:18:02,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:18:02,187 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:18:02,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:18:02,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:18:02,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:18:02,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:18:02,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:18:02,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:18:02,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:18:02,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:18:02,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:18:02,189 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:18:02,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:18:02,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:18:02,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:18:02,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:18:02,189 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04f938fee3705b6ab112999ad746b29d3f93a10 [2020-12-09 12:18:02,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:18:02,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:18:02,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:18:02,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:18:02,392 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:18:02,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2020-12-09 12:18:02,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data/4fdd2d49c/bdbb94fa53a14b8a9cb689b943ef27e3/FLAG9e549f53c [2020-12-09 12:18:02,949 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:18:02,950 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2020-12-09 12:18:02,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data/4fdd2d49c/bdbb94fa53a14b8a9cb689b943ef27e3/FLAG9e549f53c [2020-12-09 12:18:03,468 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data/4fdd2d49c/bdbb94fa53a14b8a9cb689b943ef27e3 [2020-12-09 12:18:03,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:18:03,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:18:03,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:18:03,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:18:03,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:18:03,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:03" (1/1) ... [2020-12-09 12:18:03,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b15ab79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:03, skipping insertion in model container [2020-12-09 12:18:03,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:03" (1/1) ... [2020-12-09 12:18:03,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:18:03,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:18:04,043 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1032) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:940) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:706) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:174) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:676) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1409) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1353) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1046) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1046) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1424) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2293) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:580) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 12:18:04,047 INFO L168 Benchmark]: Toolchain (without parser) took 574.08 ms. Allocated memory is still 117.4 MB. Free memory was 90.1 MB in the beginning and 70.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-12-09 12:18:04,047 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 117.4 MB. Free memory is still 82.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:18:04,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.49 ms. Allocated memory is still 117.4 MB. Free memory was 89.8 MB in the beginning and 70.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-12-09 12:18:04,049 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 117.4 MB. Free memory is still 82.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 572.49 ms. Allocated memory is still 117.4 MB. Free memory was 89.8 MB in the beginning and 70.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:193) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:18:05,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:18:05,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:18:05,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:18:05,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:18:05,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:18:05,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:18:05,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:18:05,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:18:05,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:18:05,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:18:05,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:18:05,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:18:05,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:18:05,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:18:05,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:18:05,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:18:05,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:18:05,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:18:05,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:18:05,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:18:05,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:18:05,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:18:05,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:18:05,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:18:05,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:18:05,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:18:05,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:18:05,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:18:05,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:18:05,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:18:05,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:18:05,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:18:05,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:18:05,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:18:05,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:18:05,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:18:05,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:18:05,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:18:05,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:18:05,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:18:05,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2020-12-09 12:18:05,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:18:05,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:18:05,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:18:05,470 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:18:05,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:18:05,470 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:18:05,470 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:18:05,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:18:05,471 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:18:05,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:18:05,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:18:05,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:18:05,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:18:05,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:18:05,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:18:05,472 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:18:05,472 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:18:05,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:18:05,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:18:05,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:18:05,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:18:05,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:18:05,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:18:05,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:18:05,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:18:05,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:18:05,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:18:05,474 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:18:05,474 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:18:05,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:18:05,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:18:05,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:18:05,475 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04f938fee3705b6ab112999ad746b29d3f93a10 [2020-12-09 12:18:05,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:18:05,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:18:05,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:18:05,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:18:05,710 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:18:05,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2020-12-09 12:18:05,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data/4d278fecd/408ab404a79145ffb3257cc31a1f7d3e/FLAGf17a43d0f [2020-12-09 12:18:06,291 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:18:06,291 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2020-12-09 12:18:06,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data/4d278fecd/408ab404a79145ffb3257cc31a1f7d3e/FLAGf17a43d0f [2020-12-09 12:18:06,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/data/4d278fecd/408ab404a79145ffb3257cc31a1f7d3e [2020-12-09 12:18:06,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:18:06,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:18:06,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:18:06,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:18:06,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:18:06,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:06" (1/1) ... [2020-12-09 12:18:06,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4ba14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:06, skipping insertion in model container [2020-12-09 12:18:06,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:06" (1/1) ... [2020-12-09 12:18:06,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:18:06,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:18:07,472 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2020-12-09 12:18:07,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:18:07,503 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 12:18:07,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:18:07,615 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2020-12-09 12:18:07,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:18:07,626 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:18:07,774 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2020-12-09 12:18:07,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:18:07,849 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:18:07,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07 WrapperNode [2020-12-09 12:18:07,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:18:07,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:18:07,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:18:07,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:18:07,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:18:07,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:18:07,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:18:07,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:18:07,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... [2020-12-09 12:18:07,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:18:07,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:18:07,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:18:07,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:18:07,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:18:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-12-09 12:18:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2020-12-09 12:18:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2020-12-09 12:18:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 12:18:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:18:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 12:18:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-12-09 12:18:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2020-12-09 12:18:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:18:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 12:18:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 12:18:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 12:18:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2020-12-09 12:18:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:18:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:18:08,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:18:08,931 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2020-12-09 12:18:08,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:08 BoogieIcfgContainer [2020-12-09 12:18:08,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:18:08,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:18:08,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:18:08,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:18:08,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:18:06" (1/3) ... [2020-12-09 12:18:08,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a62f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:18:08, skipping insertion in model container [2020-12-09 12:18:08,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:07" (2/3) ... [2020-12-09 12:18:08,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a62f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:18:08, skipping insertion in model container [2020-12-09 12:18:08,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:08" (3/3) ... [2020-12-09 12:18:08,937 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2020-12-09 12:18:08,947 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:18:08,949 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 12:18:08,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 12:18:08,973 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:18:08,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:18:08,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:18:08,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:18:08,974 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:18:08,974 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:18:08,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:18:08,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:18:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-12-09 12:18:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 12:18:08,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:18:08,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:18:08,988 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:18:08,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:18:08,992 INFO L82 PathProgramCache]: Analyzing trace with hash -653166678, now seen corresponding path program 1 times [2020-12-09 12:18:09,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:18:09,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453815852] [2020-12-09 12:18:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 12:18:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:18:09,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 12:18:09,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:18:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:18:09,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:18:09,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453815852] [2020-12-09 12:18:09,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:18:09,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:18:09,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030157960] [2020-12-09 12:18:09,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:18:09,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:18:09,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:18:09,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:18:09,235 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-12-09 12:18:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:18:09,276 INFO L93 Difference]: Finished difference Result 235 states and 307 transitions. [2020-12-09 12:18:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:18:09,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-09 12:18:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:18:09,285 INFO L225 Difference]: With dead ends: 235 [2020-12-09 12:18:09,285 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 12:18:09,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:18:09,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 12:18:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-12-09 12:18:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-09 12:18:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2020-12-09 12:18:09,325 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 9 [2020-12-09 12:18:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:18:09,325 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2020-12-09 12:18:09,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:18:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2020-12-09 12:18:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-09 12:18:09,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:18:09,327 INFO L422 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] [2020-12-09 12:18:09,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:18:09,528 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:18:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:18:09,530 INFO L82 PathProgramCache]: Analyzing trace with hash 950528437, now seen corresponding path program 1 times [2020-12-09 12:18:09,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:18:09,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841250686] [2020-12-09 12:18:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 12:18:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:18:09,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 12:18:09,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:18:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 12:18:09,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:18:09,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841250686] [2020-12-09 12:18:09,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:18:09,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:18:09,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886116012] [2020-12-09 12:18:09,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:18:09,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:18:09,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:18:09,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:18:09,921 INFO L87 Difference]: Start difference. First operand 148 states and 186 transitions. Second operand 4 states. [2020-12-09 12:18:09,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:18:09,963 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2020-12-09 12:18:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:18:09,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-12-09 12:18:09,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:18:09,966 INFO L225 Difference]: With dead ends: 290 [2020-12-09 12:18:09,966 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 12:18:09,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:18:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 12:18:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-12-09 12:18:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-09 12:18:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2020-12-09 12:18:09,983 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 40 [2020-12-09 12:18:09,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:18:09,983 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2020-12-09 12:18:09,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:18:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2020-12-09 12:18:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 12:18:09,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:18:09,984 INFO L422 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] [2020-12-09 12:18:10,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 12:18:10,187 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:18:10,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:18:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1298860141, now seen corresponding path program 1 times [2020-12-09 12:18:10,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:18:10,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508139231] [2020-12-09 12:18:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a27d2c-b1df-4364-b397-2e86e432958d/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 12:18:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:18:11,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:18:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:18:12,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:18:12,553 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 12:18:12,553 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:18:12,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 12:18:12,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:18:12 BoogieIcfgContainer [2020-12-09 12:18:12,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:18:12,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:18:12,867 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:18:12,867 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:18:12,868 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:08" (3/4) ... [2020-12-09 12:18:12,870 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 12:18:12,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:18:12,871 INFO L168 Benchmark]: Toolchain (without parser) took 6075.95 ms. Allocated memory was 58.7 MB in the beginning and 155.2 MB in the end (delta: 96.5 MB). Free memory was 34.0 MB in the beginning and 69.8 MB in the end (delta: -35.8 MB). Peak memory consumption was 59.9 MB. Max. memory is 16.1 GB. [2020-12-09 12:18:12,872 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:18:12,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1054.07 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 33.8 MB in the beginning and 32.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:18:12,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.98 ms. Allocated memory is still 86.0 MB. Free memory was 32.1 MB in the beginning and 47.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:18:12,873 INFO L168 Benchmark]: Boogie Preprocessor took 45.39 ms. Allocated memory is still 86.0 MB. Free memory was 47.5 MB in the beginning and 42.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:18:12,874 INFO L168 Benchmark]: RCFGBuilder took 944.95 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 42.8 MB in the beginning and 56.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:18:12,874 INFO L168 Benchmark]: TraceAbstraction took 3933.43 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 55.6 MB in the beginning and 69.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:18:12,874 INFO L168 Benchmark]: Witness Printer took 2.98 ms. Allocated memory is still 155.2 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:18:12,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1054.07 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 33.8 MB in the beginning and 32.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.98 ms. Allocated memory is still 86.0 MB. Free memory was 32.1 MB in the beginning and 47.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.39 ms. Allocated memory is still 86.0 MB. Free memory was 47.5 MB in the beginning and 42.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 944.95 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 42.8 MB in the beginning and 56.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3933.43 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 55.6 MB in the beginning and 69.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 2.98 ms. Allocated memory is still 155.2 MB. Free memory is still 69.8 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: - 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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [L4289] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [L3935] return (err); [L3935] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [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={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-276824058:0}, id_table={-1073741814:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1073741816:0}, virtio_blk={-813694974:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=1, 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, 1.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1853 SizeOfPredicates, 3 NumberOfNonLiveVariables, 611 ConjunctsInSsa, 6 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 Received shutdown request...