./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:53:28,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:53:28,455 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-11-19 04:53:28,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:53:28,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:53:28,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:53:28,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:53:28,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:53:28,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:53:28,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:53:28,521 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:53:28,522 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:53:28,522 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:53:28,524 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:53:28,525 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:53:28,525 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:53:28,525 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:53:28,527 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:53:28,527 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:53:28,528 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:53:28,528 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:53:28,529 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:53:28,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:53:28,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:53:28,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:53:28,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:53:28,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:53:28,532 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:53:28,532 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:53:28,533 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:53:28,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:53:28,534 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:53:28,534 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:53:28,534 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:53:28,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:53:28,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:53:28,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:28,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:53:28,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:53:28,536 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:53:28,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:53:28,536 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:53:28,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:53:28,537 INFO L153 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_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db [2023-11-19 04:53:28,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:53:28,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:53:28,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:53:28,846 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:53:28,846 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:53:28,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-19 04:53:31,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:53:32,524 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:53:32,525 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-19 04:53:32,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/data/525410db3/40b16a246f5d4f5f8e112a14cb8ffc73/FLAG47bda88d4 [2023-11-19 04:53:32,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/data/525410db3/40b16a246f5d4f5f8e112a14cb8ffc73 [2023-11-19 04:53:32,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:53:32,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:53:32,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:32,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:53:32,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:53:32,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:32" (1/1) ... [2023-11-19 04:53:32,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5082ff1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:32, skipping insertion in model container [2023-11-19 04:53:32,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:32" (1/1) ... [2023-11-19 04:53:32,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:34,678 WARN L580 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-19 04:53:34,691 WARN L580 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-19 04:53:34,821 WARN L580 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-19 04:53:34,828 WARN L580 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-19 04:53:36,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:36,398 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 04:53:36,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24df7702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:36, skipping insertion in model container [2023-11-19 04:53:36,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:36,399 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:53:36,402 INFO L158 Benchmark]: Toolchain (without parser) took 3815.31ms. Allocated memory is still 157.3MB. Free memory was 102.0MB in the beginning and 75.8MB in the end (delta: 26.2MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2023-11-19 04:53:36,402 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:53:36,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3812.70ms. Allocated memory is still 157.3MB. Free memory was 101.8MB in the beginning and 75.8MB in the end (delta: 26.0MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2023-11-19 04:53:36,405 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3812.70ms. Allocated memory is still 157.3MB. Free memory was 101.8MB in the beginning and 75.8MB in the end (delta: 26.0MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5175]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:53:38,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:53:39,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2023-11-19 04:53:39,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:53:39,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:53:39,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:53:39,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:53:39,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:53:39,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:53:39,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:53:39,082 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:53:39,083 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:53:39,083 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:53:39,088 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:53:39,089 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:53:39,090 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:53:39,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:53:39,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:53:39,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:53:39,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:53:39,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:53:39,094 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:53:39,095 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:53:39,095 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:53:39,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:53:39,096 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:53:39,096 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:53:39,097 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:53:39,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:53:39,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:53:39,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:53:39,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:53:39,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:53:39,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:39,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:53:39,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:53:39,102 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:53:39,102 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:53:39,102 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:53:39,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:53:39,103 INFO L153 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_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db [2023-11-19 04:53:39,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:53:39,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:53:39,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:53:39,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:53:39,690 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:53:39,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-19 04:53:43,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:53:43,759 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:53:43,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-19 04:53:43,818 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/data/827bb4fee/47c1f0f9019545f8a8ed66d06209b23b/FLAGeff04d867 [2023-11-19 04:53:43,843 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/data/827bb4fee/47c1f0f9019545f8a8ed66d06209b23b [2023-11-19 04:53:43,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:53:43,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:53:43,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:43,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:53:43,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:53:43,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:43" (1/1) ... [2023-11-19 04:53:43,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8d9541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:43, skipping insertion in model container [2023-11-19 04:53:43,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:43" (1/1) ... [2023-11-19 04:53:44,119 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:47,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:47,769 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:53:47,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:48,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:48,363 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:53:48,557 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/virtio_config.h"), "i" (99), "i" (12UL)); [4816-4817] [2023-11-19 04:53:48,564 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/virtio_config.h"), "i" (178), "i" (12UL)); [4854-4855] [2023-11-19 04:53:48,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (172), "i" (12UL)); [5304-5305] [2023-11-19 04:53:48,611 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (198), "i" (12UL)); [5360-5361] [2023-11-19 04:53:48,666 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (285), "i" (12UL)); [5562-5563] [2023-11-19 04:53:48,668 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (287), "i" (12UL)); [5612-5613] [2023-11-19 04:53:48,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (289), "i" (12UL)); [5662-5663] [2023-11-19 04:53:48,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (348), "i" (12UL)); [5800-5801] [2023-11-19 04:53:48,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (391), "i" (12UL)); [5911-5912] [2023-11-19 04:53:48,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (478), "i" (12UL)); [6126-6127] [2023-11-19 04:53:48,745 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (512), "i" (12UL)); [6214-6215] [2023-11-19 04:53:48,747 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (533), "i" (12UL)); [6269-6270] [2023-11-19 04:53:48,755 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (591), "i" (12UL)); [6454-6455] [2023-11-19 04:53:48,770 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (669), "i" (12UL)); [6605-6606] [2023-11-19 04:53:48,772 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (691), "i" (12UL)); [6671-6672] [2023-11-19 04:53:48,774 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (700), "i" (12UL)); [6744-6745] [2023-11-19 04:53:48,776 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (709), "i" (12UL)); [6818-6819] [2023-11-19 04:53:48,778 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (716), "i" (12UL)); [6888-6889] [2023-11-19 04:53:48,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (722), "i" (12UL)); [6958-6959] [2023-11-19 04:53:48,782 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (728), "i" (12UL)); [7028-7029] [2023-11-19 04:53:49,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:49,416 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:53:49,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49 WrapperNode [2023-11-19 04:53:49,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:49,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:49,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:53:49,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:53:49,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,774 INFO L138 Inliner]: procedures = 569, calls = 1545, calls flagged for inlining = 250, calls inlined = 160, statements flattened = 3168 [2023-11-19 04:53:49,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:49,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:53:49,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:53:49,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:53:49,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:49,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:50,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:53:50,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:53:50,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:53:50,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:53:50,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (1/1) ... [2023-11-19 04:53:50,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:50,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:50,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:53:50,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:53:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2023-11-19 04:53:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2023-11-19 04:53:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2023-11-19 04:53:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2023-11-19 04:53:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:53:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:53:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2023-11-19 04:53:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2023-11-19 04:53:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_del_gendisk [2023-11-19 04:53:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_del_gendisk [2023-11-19 04:53:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-19 04:53:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-19 04:53:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2023-11-19 04:53:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2023-11-19 04:53:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure init_vq [2023-11-19 04:53:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure init_vq [2023-11-19 04:53:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2023-11-19 04:53:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2023-11-19 04:53:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_config_changed [2023-11-19 04:53:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_config_changed [2023-11-19 04:53:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-19 04:53:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-19 04:53:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 04:53:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 04:53:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2023-11-19 04:53:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2023-11-19 04:53:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:53:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-19 04:53:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:53:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 04:53:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_cache_mode [2023-11-19 04:53:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_cache_mode [2023-11-19 04:53:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2023-11-19 04:53:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 04:53:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 04:53:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2023-11-19 04:53:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2023-11-19 04:53:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure string_get_size [2023-11-19 04:53:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure string_get_size [2023-11-19 04:53:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2023-11-19 04:53:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2023-11-19 04:53:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_update_cache_mode [2023-11-19 04:53:50,134 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_update_cache_mode [2023-11-19 04:53:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_blk_cleanup_queue [2023-11-19 04:53:50,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_blk_cleanup_queue [2023-11-19 04:53:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2023-11-19 04:53:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2023-11-19 04:53:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2023-11-19 04:53:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2023-11-19 04:53:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 04:53:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-19 04:53:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_flush [2023-11-19 04:53:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_flush [2023-11-19 04:53:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2023-11-19 04:53:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2023-11-19 04:53:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure ida_simple_remove [2023-11-19 04:53:50,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_simple_remove [2023-11-19 04:53:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2023-11-19 04:53:50,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2023-11-19 04:53:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2023-11-19 04:53:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2023-11-19 04:53:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2023-11-19 04:53:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2023-11-19 04:53:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 04:53:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 04:53:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2023-11-19 04:53:50,140 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2023-11-19 04:53:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2023-11-19 04:53:50,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2023-11-19 04:53:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2023-11-19 04:53:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2023-11-19 04:53:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread8 [2023-11-19 04:53:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread8 [2023-11-19 04:53:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:53:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure revalidate_disk [2023-11-19 04:53:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure revalidate_disk [2023-11-19 04:53:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:53:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 04:53:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 04:53:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:53:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2023-11-19 04:53:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2023-11-19 04:53:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-19 04:53:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-19 04:53:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:53:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:53:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-19 04:53:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2023-11-19 04:53:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2023-11-19 04:53:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_cache_type_store [2023-11-19 04:53:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_cache_type_store [2023-11-19 04:53:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2023-11-19 04:53:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2023-11-19 04:53:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2023-11-19 04:53:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2023-11-19 04:53:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-19 04:53:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:53:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:53:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 04:53:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 04:53:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 04:53:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 04:53:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:53:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-19 04:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-19 04:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:53:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2023-11-19 04:53:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2023-11-19 04:53:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-19 04:53:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-19 04:53:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread32 [2023-11-19 04:53:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread32 [2023-11-19 04:53:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-11-19 04:53:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-11-19 04:53:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2023-11-19 04:53:50,150 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2023-11-19 04:53:50,150 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-19 04:53:50,150 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-19 04:53:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2023-11-19 04:53:50,152 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2023-11-19 04:53:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread16 [2023-11-19 04:53:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread16 [2023-11-19 04:53:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2023-11-19 04:53:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2023-11-19 04:53:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2023-11-19 04:53:50,154 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2023-11-19 04:53:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2023-11-19 04:53:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2023-11-19 04:53:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread64 [2023-11-19 04:53:50,159 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread64 [2023-11-19 04:53:50,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:53:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2023-11-19 04:53:50,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2023-11-19 04:53:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_block_request__double_get [2023-11-19 04:53:50,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_block_request__double_get [2023-11-19 04:53:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2023-11-19 04:53:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2023-11-19 04:53:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:53:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-19 04:53:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-19 04:53:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-19 04:53:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:53:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:53:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure virtio32_to_cpu [2023-11-19 04:53:50,169 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio32_to_cpu [2023-11-19 04:53:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2023-11-19 04:53:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2023-11-19 04:53:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-19 04:53:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-19 04:53:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2023-11-19 04:53:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2023-11-19 04:53:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2023-11-19 04:53:50,171 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2023-11-19 04:53:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2023-11-19 04:53:50,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2023-11-19 04:53:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2023-11-19 04:53:50,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2023-11-19 04:53:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2023-11-19 04:53:50,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2023-11-19 04:53:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2023-11-19 04:53:50,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2023-11-19 04:53:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:53:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:53:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2023-11-19 04:53:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2023-11-19 04:53:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-19 04:53:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-19 04:53:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 04:53:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-19 04:53:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:53:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:53:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2023-11-19 04:53:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2023-11-19 04:53:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2023-11-19 04:53:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2023-11-19 04:53:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-19 04:53:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-19 04:53:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2023-11-19 04:53:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2023-11-19 04:53:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-19 04:53:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-19 04:53:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2023-11-19 04:53:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2023-11-19 04:53:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2023-11-19 04:53:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2023-11-19 04:53:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_put_disk [2023-11-19 04:53:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_put_disk [2023-11-19 04:53:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_device_ready [2023-11-19 04:53:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_device_ready [2023-11-19 04:53:50,952 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:53:50,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:53:51,252 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:54:04,505 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:54:04,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:54:04,530 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-19 04:54:04,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:04 BoogieIcfgContainer [2023-11-19 04:54:04,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:54:04,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:54:04,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:54:04,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:54:04,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:43" (1/3) ... [2023-11-19 04:54:04,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504b28b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:04, skipping insertion in model container [2023-11-19 04:54:04,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:49" (2/3) ... [2023-11-19 04:54:04,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504b28b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:04, skipping insertion in model container [2023-11-19 04:54:04,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:04" (3/3) ... [2023-11-19 04:54:04,568 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-19 04:54:04,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:54:04,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 476 error locations. [2023-11-19 04:54:04,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:54:04,719 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@9e7bbf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:54:04,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 476 error locations. [2023-11-19 04:54:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 1960 states, 1100 states have (on average 1.6209090909090909) internal successors, (1783), 1617 states have internal predecessors, (1783), 314 states have call successors, (314), 81 states have call predecessors, (314), 80 states have return successors, (311), 309 states have call predecessors, (311), 311 states have call successors, (311) [2023-11-19 04:54:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 04:54:04,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:04,762 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 04:54:04,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-19 04:54:04,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:04,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1017197984, now seen corresponding path program 1 times [2023-11-19 04:54:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:04,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118600328] [2023-11-19 04:54:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:04,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:04,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:04,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:54:04,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:54:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:06,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:54:06,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:54:06,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:06,449 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:06,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118600328] [2023-11-19 04:54:06,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118600328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:06,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:06,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:54:06,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459405385] [2023-11-19 04:54:06,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:06,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:54:06,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:06,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:54:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:54:06,503 INFO L87 Difference]: Start difference. First operand has 1960 states, 1100 states have (on average 1.6209090909090909) internal successors, (1783), 1617 states have internal predecessors, (1783), 314 states have call successors, (314), 81 states have call predecessors, (314), 80 states have return successors, (311), 309 states have call predecessors, (311), 311 states have call successors, (311) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 04:54:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:08,647 INFO L93 Difference]: Finished difference Result 2325 states and 2752 transitions. [2023-11-19 04:54:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:54:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2023-11-19 04:54:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:08,683 INFO L225 Difference]: With dead ends: 2325 [2023-11-19 04:54:08,683 INFO L226 Difference]: Without dead ends: 2306 [2023-11-19 04:54:08,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:54:08,688 INFO L413 NwaCegarLoop]: 2033 mSDtfsCounter, 727 mSDsluCounter, 8244 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 10277 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:08,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 10277 Invalid, 411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [160 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 04:54:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-11-19 04:54:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2069. [2023-11-19 04:54:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 1200 states have (on average 1.5725) internal successors, (1887), 1694 states have internal predecessors, (1887), 328 states have call successors, (328), 103 states have call predecessors, (328), 102 states have return successors, (297), 291 states have call predecessors, (297), 294 states have call successors, (297) [2023-11-19 04:54:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2512 transitions. [2023-11-19 04:54:08,854 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2512 transitions. Word has length 59 [2023-11-19 04:54:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:08,855 INFO L495 AbstractCegarLoop]: Abstraction has 2069 states and 2512 transitions. [2023-11-19 04:54:08,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 04:54:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2512 transitions. [2023-11-19 04:54:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 04:54:08,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:08,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-19 04:54:08,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:09,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:09,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-19 04:54:09,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1968585835, now seen corresponding path program 1 times [2023-11-19 04:54:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:09,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884499995] [2023-11-19 04:54:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:09,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:09,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:09,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:54:09,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:54:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:10,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:54:10,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:54:10,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:10,634 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:10,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884499995] [2023-11-19 04:54:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884499995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:10,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:10,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:54:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352779588] [2023-11-19 04:54:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:10,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:54:10,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:54:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:54:10,639 INFO L87 Difference]: Start difference. First operand 2069 states and 2512 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 04:54:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:10,795 INFO L93 Difference]: Finished difference Result 2068 states and 2510 transitions. [2023-11-19 04:54:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:54:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2023-11-19 04:54:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:10,813 INFO L225 Difference]: With dead ends: 2068 [2023-11-19 04:54:10,814 INFO L226 Difference]: Without dead ends: 2068 [2023-11-19 04:54:10,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:54:10,815 INFO L413 NwaCegarLoop]: 2072 mSDtfsCounter, 2024 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:10,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 4143 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:54:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2023-11-19 04:54:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2068. [2023-11-19 04:54:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 1200 states have (on average 1.5716666666666668) internal successors, (1886), 1693 states have internal predecessors, (1886), 327 states have call successors, (327), 103 states have call predecessors, (327), 102 states have return successors, (297), 291 states have call predecessors, (297), 294 states have call successors, (297) [2023-11-19 04:54:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2510 transitions. [2023-11-19 04:54:10,921 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2510 transitions. Word has length 64 [2023-11-19 04:54:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:10,922 INFO L495 AbstractCegarLoop]: Abstraction has 2068 states and 2510 transitions. [2023-11-19 04:54:10,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 04:54:10,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2510 transitions. [2023-11-19 04:54:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 04:54:10,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:10,927 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1] [2023-11-19 04:54:10,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:11,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:11,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-19 04:54:11,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:11,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1127644509, now seen corresponding path program 1 times [2023-11-19 04:54:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470562898] [2023-11-19 04:54:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:11,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:11,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:54:11,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 04:54:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:12,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:54:12,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 04:54:12,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:12,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:12,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470562898] [2023-11-19 04:54:12,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470562898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:12,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:12,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:54:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303135530] [2023-11-19 04:54:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:12,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:54:12,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:12,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:54:12,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:54:12,745 INFO L87 Difference]: Start difference. First operand 2068 states and 2510 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:54:13,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:13,067 INFO L93 Difference]: Finished difference Result 3718 states and 4457 transitions. [2023-11-19 04:54:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:54:13,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 70 [2023-11-19 04:54:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:13,097 INFO L225 Difference]: With dead ends: 3718 [2023-11-19 04:54:13,097 INFO L226 Difference]: Without dead ends: 3718 [2023-11-19 04:54:13,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:54:13,099 INFO L413 NwaCegarLoop]: 2695 mSDtfsCounter, 1929 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 7407 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:13,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1929 Valid, 7407 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2023-11-19 04:54:13,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3134. [2023-11-19 04:54:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3134 states, 2033 states have (on average 1.5996064928676832) internal successors, (3252), 2545 states have internal predecessors, (3252), 504 states have call successors, (504), 159 states have call predecessors, (504), 158 states have return successors, (489), 463 states have call predecessors, (489), 471 states have call successors, (489) [2023-11-19 04:54:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 4245 transitions. [2023-11-19 04:54:13,250 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 4245 transitions. Word has length 70 [2023-11-19 04:54:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:13,251 INFO L495 AbstractCegarLoop]: Abstraction has 3134 states and 4245 transitions. [2023-11-19 04:54:13,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:54:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 4245 transitions. [2023-11-19 04:54:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 04:54:13,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:13,254 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-19 04:54:13,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-19 04:54:13,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:13,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-19 04:54:13,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1906487682, now seen corresponding path program 1 times [2023-11-19 04:54:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:13,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188600296] [2023-11-19 04:54:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:13,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:13,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:13,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:54:13,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505b2ece-77d9-4134-bcfd-4d590f10ebee/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 04:54:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:14,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:54:14,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:14,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 04:54:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 04:54:15,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:15,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:15,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188600296] [2023-11-19 04:54:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188600296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:15,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:15,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:54:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162042979] [2023-11-19 04:54:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:15,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:54:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:54:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:54:15,172 INFO L87 Difference]: Start difference. First operand 3134 states and 4245 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12)