./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 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF --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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:55,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:55,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:55,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:55,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:55,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:55,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:55,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:55,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:55,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:55,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:55,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:55,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:55,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:55,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:55,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:55,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:55,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:55,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:55,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:55,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:55,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:55,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:55,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:55,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:55,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:55,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:55,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:55,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:55,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:55,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:55,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:55,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:55,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:55,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:55,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:55,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:55,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:55,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:55,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:55,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:55,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:52:55,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:55,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:55,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:55,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:55,831 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:55,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:55,832 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:55,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:52:55,832 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:55,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:55,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:52:55,833 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:52:55,833 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:55,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:52:55,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:52:55,833 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:52:55,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:55,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:52:55,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:55,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:52:55,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:55,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:52:55,838 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:55,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:52:55,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:55,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:52:55,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:55,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:55,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:55,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:55,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:55,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:52:55,841 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:52:55,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:52:55,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:52:55,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:55,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:55,843 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_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-12 22:52:56,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:56,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:56,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:56,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:56,211 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:56,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-12 22:52:56,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data/18458a37e/b400f6f008fc477ba6b860c59f1cea2d/FLAG717e9cd23 [2021-11-12 22:52:57,076 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:57,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-12 22:52:57,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data/18458a37e/b400f6f008fc477ba6b860c59f1cea2d/FLAG717e9cd23 [2021-11-12 22:52:57,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data/18458a37e/b400f6f008fc477ba6b860c59f1cea2d [2021-11-12 22:52:57,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:57,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:57,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:57,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:57,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:57,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:57" (1/1) ... [2021-11-12 22:52:57,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3586cdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:57, skipping insertion in model container [2021-11-12 22:52:57,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:57" (1/1) ... [2021-11-12 22:52:57,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:57,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:58,550 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-12 22:52:58,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:58,607 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:52:58,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@489b12be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:58, skipping insertion in model container [2021-11-12 22:52:58,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:58,608 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:52:58,610 INFO L158 Benchmark]: Toolchain (without parser) took 1358.09ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 66.4MB in the beginning and 100.4MB in the end (delta: -34.0MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-11-12 22:52:58,611 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory was 81.6MB in the beginning and 81.6MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:58,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1341.13ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 66.4MB in the beginning and 100.4MB in the end (delta: -34.0MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-11-12 22:52:58,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory was 81.6MB in the beginning and 81.6MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1341.13ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 66.4MB in the beginning and 100.4MB in the end (delta: -34.0MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3642]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF --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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:53:00,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:53:00,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:53:00,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:53:00,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:53:00,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:53:00,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:53:00,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:53:00,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:53:00,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:53:00,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:53:00,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:53:00,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:53:00,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:53:00,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:53:00,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:53:00,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:53:00,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:53:00,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:53:00,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:53:00,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:53:00,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:53:00,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:53:00,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:53:00,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:53:00,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:53:00,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:53:00,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:53:00,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:53:00,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:53:00,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:53:00,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:53:00,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:53:00,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:53:00,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:53:00,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:53:00,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:53:00,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:53:00,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:53:00,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:53:00,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:53:00,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:53:00,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:53:00,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:53:00,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:53:00,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:53:00,988 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:53:00,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:53:00,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:53:00,989 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:53:00,989 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:53:00,990 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:53:00,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:53:00,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:53:00,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:53:00,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:53:00,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:53:00,993 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:53:00,994 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:53:00,994 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:53:00,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:53:00,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:53:00,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:53:00,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:53:00,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:53:00,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:53:00,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:00,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:53:00,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:53:00,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:53:00,996 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:53:00,997 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:53:00,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:53:00,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:53:00,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:53:00,998 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-12 22:53:01,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:53:01,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:53:01,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:53:01,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:53:01,411 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:53:01,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-12 22:53:01,487 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data/e1a2ae26e/484ce2813e234592b59b9ac19cff5c96/FLAG973aedf95 [2021-11-12 22:53:02,251 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:53:02,251 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-12 22:53:02,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data/e1a2ae26e/484ce2813e234592b59b9ac19cff5c96/FLAG973aedf95 [2021-11-12 22:53:02,352 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/data/e1a2ae26e/484ce2813e234592b59b9ac19cff5c96 [2021-11-12 22:53:02,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:53:02,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:53:02,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:02,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:53:02,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:53:02,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:02" (1/1) ... [2021-11-12 22:53:02,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1269bddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:02, skipping insertion in model container [2021-11-12 22:53:02,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:02" (1/1) ... [2021-11-12 22:53:02,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:53:02,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:03,424 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-12 22:53:03,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:03,487 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:53:03,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:03,753 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-12 22:53:03,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:03,772 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:53:04,117 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-12 22:53:04,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:04,178 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:53:04,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04 WrapperNode [2021-11-12 22:53:04,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:04,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:04,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:53:04,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:53:04,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:04,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:53:04,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:53:04,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:53:04,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:53:04,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:53:04,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:53:04,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:53:04,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (1/1) ... [2021-11-12 22:53:04,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:04,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:04,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:53:04,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:53:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:53:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:53:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-11-12 22:53:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-11-12 22:53:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:53:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-11-12 22:53:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-11-12 22:53:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:53:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:53:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-12 22:53:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-12 22:53:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:53:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:53:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:53:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-11-12 22:53:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-11-12 22:53:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:53:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:53:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-12 22:53:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-12 22:53:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:53:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:53:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:53:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:53:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:53:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:53:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:53:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:53:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:53:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-12 22:53:04,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-12 22:53:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:53:04,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:53:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-12 22:53:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-12 22:53:06,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:53:06,070 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:53:06,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:06 BoogieIcfgContainer [2021-11-12 22:53:06,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:53:06,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:53:06,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:53:06,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:53:06,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:53:02" (1/3) ... [2021-11-12 22:53:06,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a239f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:06, skipping insertion in model container [2021-11-12 22:53:06,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:04" (2/3) ... [2021-11-12 22:53:06,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a239f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:06, skipping insertion in model container [2021-11-12 22:53:06,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:06" (3/3) ... [2021-11-12 22:53:06,081 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-12 22:53:06,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:53:06,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:53:06,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:53:06,165 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=FINITE_AUTOMATA, 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 [2021-11-12 22:53:06,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:53:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-12 22:53:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 22:53:06,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:06,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:06,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1803778122, now seen corresponding path program 1 times [2021-11-12 22:53:06,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:06,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187630969] [2021-11-12 22:53:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:06,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:06,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:06,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:06,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:53:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:06,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:53:06,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:06,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:06,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:06,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187630969] [2021-11-12 22:53:06,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187630969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:06,720 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:06,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-12 22:53:06,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599810155] [2021-11-12 22:53:06,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:06,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:53:06,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:53:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:53:06,756 INFO L87 Difference]: Start difference. First operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:53:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:06,833 INFO L93 Difference]: Finished difference Result 346 states and 438 transitions. [2021-11-12 22:53:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:53:06,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-12 22:53:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:06,848 INFO L225 Difference]: With dead ends: 346 [2021-11-12 22:53:06,848 INFO L226 Difference]: Without dead ends: 216 [2021-11-12 22:53:06,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:53:06,857 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 137 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.39ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:06,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 303 Invalid, 9 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 12.39ms Time] [2021-11-12 22:53:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-12 22:53:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-12 22:53:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2181818181818183) internal successors, (201), 166 states have internal predecessors, (201), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-12 22:53:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 265 transitions. [2021-11-12 22:53:06,929 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 265 transitions. Word has length 15 [2021-11-12 22:53:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:06,929 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 265 transitions. [2021-11-12 22:53:06,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:53:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 265 transitions. [2021-11-12 22:53:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 22:53:06,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:06,936 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:06,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:07,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:07,151 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1193905023, now seen corresponding path program 1 times [2021-11-12 22:53:07,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:07,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464898504] [2021-11-12 22:53:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:07,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:07,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:07,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:07,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:53:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:07,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:53:07,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 22:53:07,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-12 22:53:08,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:08,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464898504] [2021-11-12 22:53:08,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464898504] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:08,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:08,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:53:08,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770474821] [2021-11-12 22:53:08,201 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:08,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:53:08,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:53:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:53:08,206 INFO L87 Difference]: Start difference. First operand 216 states and 265 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 22:53:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:08,279 INFO L93 Difference]: Finished difference Result 424 states and 520 transitions. [2021-11-12 22:53:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:53:08,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 78 [2021-11-12 22:53:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:08,283 INFO L225 Difference]: With dead ends: 424 [2021-11-12 22:53:08,283 INFO L226 Difference]: Without dead ends: 216 [2021-11-12 22:53:08,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:08,287 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 2 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.59ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:08,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 593 Invalid, 10 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 25.59ms Time] [2021-11-12 22:53:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-12 22:53:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-12 22:53:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2121212121212122) internal successors, (200), 166 states have internal predecessors, (200), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-12 22:53:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2021-11-12 22:53:08,312 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 78 [2021-11-12 22:53:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:08,313 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2021-11-12 22:53:08,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 22:53:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2021-11-12 22:53:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 22:53:08,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:08,318 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:08,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:08,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:08,543 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -391319208, now seen corresponding path program 1 times [2021-11-12 22:53:08,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:08,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644679879] [2021-11-12 22:53:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:08,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:08,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:08,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:53:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:53:10,465 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:53:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:53:12,434 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 22:53:12,434 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:53:12,436 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:53:12,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:12,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:12,665 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 22:53:12,668 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:53:12,733 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 22:53:12,736 INFO L158 Benchmark]: Toolchain (without parser) took 10377.68ms. Allocated memory was 58.7MB in the beginning and 130.0MB in the end (delta: 71.3MB). Free memory was 29.9MB in the beginning and 46.9MB in the end (delta: -17.0MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2021-11-12 22:53:12,736 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:12,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1819.98ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 29.7MB in the beginning and 44.4MB in the end (delta: -14.7MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-11-12 22:53:12,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.03ms. Allocated memory is still 86.0MB. Free memory was 44.4MB in the beginning and 39.4MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:53:12,738 INFO L158 Benchmark]: Boogie Preprocessor took 101.07ms. Allocated memory is still 86.0MB. Free memory was 39.4MB in the beginning and 34.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:53:12,739 INFO L158 Benchmark]: RCFGBuilder took 1649.01ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 34.8MB in the beginning and 63.5MB in the end (delta: -28.7MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-11-12 22:53:12,739 INFO L158 Benchmark]: TraceAbstraction took 6660.54ms. Allocated memory is still 130.0MB. Free memory was 63.5MB in the beginning and 46.9MB in the end (delta: 16.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-11-12 22:53:12,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1819.98ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 29.7MB in the beginning and 44.4MB in the end (delta: -14.7MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.03ms. Allocated memory is still 86.0MB. Free memory was 44.4MB in the beginning and 39.4MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 101.07ms. Allocated memory is still 86.0MB. Free memory was 39.4MB in the beginning and 34.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1649.01ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 34.8MB in the beginning and 63.5MB in the end (delta: -28.7MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6660.54ms. Allocated memory is still 130.0MB. Free memory was 63.5MB in the beginning and 46.9MB in the end (delta: 16.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:53:12,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3021228-5b1a-488f-b68f-9b9d1bc30a02/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null