./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:15:44,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:15:44,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:15:44,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:15:44,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:15:44,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:15:44,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:15:44,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:15:44,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:15:44,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:15:44,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:15:44,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:15:44,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:15:44,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:15:44,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:15:44,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:15:44,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:15:44,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:15:44,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:15:44,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:15:44,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:15:44,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:15:44,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:15:44,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:15:44,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:15:44,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:15:44,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:15:44,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:15:44,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:15:44,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:15:44,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:15:44,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:15:44,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:15:44,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:15:44,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:15:44,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:15:44,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:15:44,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:15:44,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:15:44,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:15:44,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:15:44,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:15:44,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:15:44,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:15:44,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:15:44,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:15:44,517 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:15:44,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:15:44,517 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:15:44,518 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:15:44,518 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:15:44,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:15:44,518 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:15:44,518 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:15:44,519 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:15:44,519 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:15:44,519 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:15:44,519 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:15:44,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:15:44,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:15:44,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:15:44,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:15:44,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:15:44,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:15:44,521 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:15:44,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:15:44,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:15:44,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:15:44,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:15:44,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:15:44,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:15:44,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:15:44,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:15:44,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:15:44,523 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:15:44,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:15:44,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:15:44,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:15:44,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:15:44,524 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c [2021-11-12 23:15:44,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:15:44,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:15:44,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:15:44,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:15:44,797 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:15:44,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-12 23:15:44,887 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data/8b961f36e/e6690b065d98406a99f1ae05b63f6e52/FLAG2d96e51ac [2021-11-12 23:15:45,764 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:15:45,764 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-12 23:15:45,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data/8b961f36e/e6690b065d98406a99f1ae05b63f6e52/FLAG2d96e51ac [2021-11-12 23:15:46,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data/8b961f36e/e6690b065d98406a99f1ae05b63f6e52 [2021-11-12 23:15:46,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:15:46,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:15:46,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:46,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:15:46,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:15:46,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:46" (1/1) ... [2021-11-12 23:15:46,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0754fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:46, skipping insertion in model container [2021-11-12 23:15:46,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:46" (1/1) ... [2021-11-12 23:15:46,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:15:46,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:15:48,302 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:48,304 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:15:49,477 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-12 23:15:49,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-12 23:15:49,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-12 23:15:49,481 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-12 23:15:49,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:15:49,566 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:15:49,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19aaaed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:49, skipping insertion in model container [2021-11-12 23:15:49,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:49,567 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:15:49,570 INFO L158 Benchmark]: Toolchain (without parser) took 3354.63ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 77.4MB in the beginning and 117.2MB in the end (delta: -39.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2021-11-12 23:15:49,571 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory was 108.9MB in the beginning and 108.8MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:15:49,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3352.08ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 77.2MB in the beginning and 117.2MB in the end (delta: -40.0MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2021-11-12 23:15:49,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory was 108.9MB in the beginning and 108.8MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3352.08ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 77.2MB in the beginning and 117.2MB in the end (delta: -40.0MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6208]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:15:51,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:15:51,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:15:51,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:15:51,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:15:51,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:15:51,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:15:51,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:15:51,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:15:51,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:15:51,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:15:51,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:15:51,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:15:51,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:15:51,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:15:51,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:15:51,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:15:51,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:15:51,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:15:51,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:15:51,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:15:51,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:15:51,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:15:51,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:15:51,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:15:51,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:15:51,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:15:51,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:15:51,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:15:51,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:15:51,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:15:51,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:15:51,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:15:51,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:15:51,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:15:51,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:15:51,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:15:51,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:15:51,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:15:51,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:15:51,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:15:51,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:15:51,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:15:51,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:15:51,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:15:51,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:15:51,960 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:15:51,960 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:15:51,960 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:15:51,960 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:15:51,960 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:15:51,961 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:15:51,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:15:51,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:15:51,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:15:51,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:15:51,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:15:51,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:15:51,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:15:51,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:15:51,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:15:51,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:15:51,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:15:51,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:15:51,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:15:51,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:15:51,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:15:51,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:15:51,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:15:51,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:15:51,966 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:15:51,966 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:15:51,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:15:51,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:15:51,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:15:51,967 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c [2021-11-12 23:15:52,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:15:52,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:15:52,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:15:52,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:15:52,428 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:15:52,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-12 23:15:52,503 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data/e42a85b02/bdbe6466bbfa419eaa563850c21fc27a/FLAGbe3ddd7dd [2021-11-12 23:15:53,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:15:53,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-12 23:15:53,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data/e42a85b02/bdbe6466bbfa419eaa563850c21fc27a/FLAGbe3ddd7dd [2021-11-12 23:15:53,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/data/e42a85b02/bdbe6466bbfa419eaa563850c21fc27a [2021-11-12 23:15:53,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:15:53,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:15:53,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:53,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:15:53,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:15:53,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:53" (1/1) ... [2021-11-12 23:15:53,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559594f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:53, skipping insertion in model container [2021-11-12 23:15:53,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:15:53" (1/1) ... [2021-11-12 23:15:53,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:15:54,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:15:57,304 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-12 23:15:57,333 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-12 23:15:57,334 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-12 23:15:57,334 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-12 23:15:57,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:15:57,417 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:15:57,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:15:57,804 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-12 23:15:57,805 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-12 23:15:57,805 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-12 23:15:57,805 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-12 23:15:57,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:15:57,827 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:15:58,231 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-12 23:15:58,231 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-12 23:15:58,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-12 23:15:58,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-12 23:15:58,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:15:58,517 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:15:58,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58 WrapperNode [2021-11-12 23:15:58,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:15:58,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:15:58,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:15:58,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:15:58,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:58,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:58,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:15:58,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:15:58,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:15:58,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:15:58,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:58,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:58,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:58,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:59,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:59,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:59,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:59,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:15:59,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:15:59,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:15:59,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:15:59,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (1/1) ... [2021-11-12 23:15:59,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:15:59,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:15:59,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:15:59,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:15:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:15:59,289 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:15:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:15:59,289 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:15:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:15:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:15:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:15:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:15:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:15:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:15:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-12 23:15:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-12 23:15:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-12 23:15:59,291 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-12 23:15:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure desc_to_dma [2021-11-12 23:15:59,291 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_to_dma [2021-11-12 23:15:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-12 23:15:59,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-12 23:15:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-12 23:15:59,292 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-12 23:15:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 23:15:59,292 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 23:15:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:15:59,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:15:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:15:59,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:15:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure mii_write [2021-11-12 23:15:59,293 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_write [2021-11-12 23:15:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 23:15:59,293 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 23:15:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-12 23:15:59,294 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-12 23:15:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:15:59,294 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:15:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:15:59,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:15:59,295 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-12 23:15:59,295 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-12 23:15:59,295 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast [2021-11-12 23:15:59,295 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast [2021-11-12 23:15:59,295 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-12 23:15:59,295 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-12 23:15:59,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:15:59,297 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-12 23:15:59,297 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-12 23:15:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:15:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:15:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:15:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:15:59,298 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:15:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-12 23:15:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-12 23:15:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:15:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:15:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 23:15:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 23:15:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:15:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:15:59,300 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:15:59,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:15:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:15:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:15:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:15:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:15:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:15:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:15:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:15:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:15:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 23:15:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 23:15:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:15:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:15:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:15:59,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:15:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:15:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:15:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:15:59,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:15:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:15:59,304 INFO L130 BoogieDeclarations]: Found specification of procedure rio_close [2021-11-12 23:15:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_close [2021-11-12 23:15:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2021-11-12 23:15:59,305 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2021-11-12 23:15:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:15:59,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:15:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:15:59,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:15:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:15:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:15:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:15:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-12 23:15:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-12 23:15:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:15:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:15:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:15:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure mii_read [2021-11-12 23:15:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_read [2021-11-12 23:15:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-12 23:15:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-12 23:15:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 23:15:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 23:15:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:15:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:15:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:15:59,311 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:15:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:15:59,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:15:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:15:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:15:59,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:15:59,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:15:59,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:15:59,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:15:59,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:15:59,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:15:59,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 23:15:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 23:15:59,323 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2021-11-12 23:15:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2021-11-12 23:15:59,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:15:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:15:59,323 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-12 23:15:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-12 23:15:59,323 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-12 23:15:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-12 23:15:59,324 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:15:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:15:59,324 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-12 23:15:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-12 23:15:59,324 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-12 23:15:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-12 23:15:59,324 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:15:59,324 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:15:59,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:15:59,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netdev_private [2021-11-12 23:15:59,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netdev_private [2021-11-12 23:15:59,325 INFO L130 BoogieDeclarations]: Found specification of procedure rio_open [2021-11-12 23:15:59,325 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_open [2021-11-12 23:15:59,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:15:59,325 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-12 23:15:59,325 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-12 23:15:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2021-11-12 23:15:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2021-11-12 23:15:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:15:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:15:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:15:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:15:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:15:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 23:15:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 23:15:59,327 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:15:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:15:59,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:15:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:15:59,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2021-11-12 23:15:59,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2021-11-12 23:15:59,327 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:15:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:15:59,328 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:15:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:15:59,328 INFO L130 BoogieDeclarations]: Found specification of procedure rio_free_tx [2021-11-12 23:15:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_free_tx [2021-11-12 23:15:59,328 INFO L130 BoogieDeclarations]: Found specification of procedure rio_tx_timeout [2021-11-12 23:15:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_tx_timeout [2021-11-12 23:15:59,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netdev_private [2021-11-12 23:15:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netdev_private [2021-11-12 23:15:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:15:59,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:15:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure rio_remove1 [2021-11-12 23:15:59,329 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_remove1 [2021-11-12 23:15:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:15:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:15:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:15:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:15:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:15:59,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:15:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2021-11-12 23:15:59,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2021-11-12 23:15:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2021-11-12 23:15:59,330 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2021-11-12 23:15:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:15:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:15:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure mii_set_media [2021-11-12 23:15:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_set_media [2021-11-12 23:15:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-12 23:15:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-12 23:15:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-12 23:15:59,332 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-12 23:15:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:15:59,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:16:00,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:16:37,593 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:16:37,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:16:37,664 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-12 23:16:37,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:16:37 BoogieIcfgContainer [2021-11-12 23:16:37,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:16:37,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:16:37,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:16:37,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:16:37,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:15:53" (1/3) ... [2021-11-12 23:16:37,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f88c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:16:37, skipping insertion in model container [2021-11-12 23:16:37,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:15:58" (2/3) ... [2021-11-12 23:16:37,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f88c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:16:37, skipping insertion in model container [2021-11-12 23:16:37,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:16:37" (3/3) ... [2021-11-12 23:16:37,677 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-12 23:16:37,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:16:37,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:16:37,741 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:16:37,747 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:16:37,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:16:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 1812 states, 1250 states have (on average 1.2816) internal successors, (1602), 1283 states have internal predecessors, (1602), 482 states have call successors, (482), 83 states have call predecessors, (482), 82 states have return successors, (476), 473 states have call predecessors, (476), 476 states have call successors, (476) [2021-11-12 23:16:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-12 23:16:37,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:37,841 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:37,842 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:16:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash -19671684, now seen corresponding path program 1 times [2021-11-12 23:16:37,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:16:37,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556050964] [2021-11-12 23:16:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:37,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:16:37,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:16:37,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:16:37,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:16:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:40,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:16:40,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-12 23:16:40,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-12 23:16:40,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:16:40,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556050964] [2021-11-12 23:16:40,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556050964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:16:40,808 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:16:40,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:16:40,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860829462] [2021-11-12 23:16:40,811 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:16:40,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:16:40,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:16:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:16:40,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:16:40,848 INFO L87 Difference]: Start difference. First operand has 1812 states, 1250 states have (on average 1.2816) internal successors, (1602), 1283 states have internal predecessors, (1602), 482 states have call successors, (482), 83 states have call predecessors, (482), 82 states have return successors, (476), 473 states have call predecessors, (476), 476 states have call successors, (476) Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-12 23:16:43,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:16:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:49,940 INFO L93 Difference]: Finished difference Result 6975 states and 10005 transitions. [2021-11-12 23:16:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:16:49,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2021-11-12 23:16:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:50,054 INFO L225 Difference]: With dead ends: 6975 [2021-11-12 23:16:50,055 INFO L226 Difference]: Without dead ends: 5169 [2021-11-12 23:16:50,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:16:50,088 INFO L933 BasicCegarLoop]: 3419 mSDtfsCounter, 6338 mSDsluCounter, 3926 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 889 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7568.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 7345 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.14ms SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8493.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:50,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 7345 Invalid, 1862 Unknown, 0 Unchecked, 67.14ms Time], IncrementalHoareTripleChecker [889 Valid, 972 Invalid, 1 Unknown, 0 Unchecked, 8493.11ms Time] [2021-11-12 23:16:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2021-11-12 23:16:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 5142. [2021-11-12 23:16:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5142 states, 3571 states have (on average 1.2766732007840942) internal successors, (4559), 3657 states have internal predecessors, (4559), 1329 states have call successors, (1329), 240 states have call predecessors, (1329), 239 states have return successors, (1325), 1316 states have call predecessors, (1325), 1325 states have call successors, (1325) [2021-11-12 23:16:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7213 transitions. [2021-11-12 23:16:50,704 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7213 transitions. Word has length 127 [2021-11-12 23:16:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:50,706 INFO L470 AbstractCegarLoop]: Abstraction has 5142 states and 7213 transitions. [2021-11-12 23:16:50,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-12 23:16:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7213 transitions. [2021-11-12 23:16:50,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-12 23:16:50,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:50,721 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 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] [2021-11-12 23:16:50,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:16:50,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:16:50,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:16:50,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1332979870, now seen corresponding path program 1 times [2021-11-12 23:16:50,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:16:50,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16480740] [2021-11-12 23:16:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:50,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:16:50,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:16:50,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:16:51,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:16:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:53,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:16:53,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-12 23:16:53,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-12 23:16:54,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:16:54,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16480740] [2021-11-12 23:16:54,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16480740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:16:54,281 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:16:54,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:16:54,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078846055] [2021-11-12 23:16:54,282 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:16:54,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:16:54,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:16:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:16:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:16:54,285 INFO L87 Difference]: Start difference. First operand 5142 states and 7213 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-12 23:16:56,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:17:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:01,410 INFO L93 Difference]: Finished difference Result 20031 states and 28123 transitions. [2021-11-12 23:17:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:01,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 131 [2021-11-12 23:17:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:01,556 INFO L225 Difference]: With dead ends: 20031 [2021-11-12 23:17:01,556 INFO L226 Difference]: Without dead ends: 14912 [2021-11-12 23:17:01,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:01,596 INFO L933 BasicCegarLoop]: 3433 mSDtfsCounter, 4795 mSDsluCounter, 6159 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5782.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4795 SdHoareTripleChecker+Valid, 9592 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.29ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6305.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:01,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4795 Valid, 9592 Invalid, 907 Unknown, 0 Unchecked, 41.29ms Time], IncrementalHoareTripleChecker [8 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 6305.55ms Time] [2021-11-12 23:17:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14912 states. [2021-11-12 23:17:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14912 to 14848. [2021-11-12 23:17:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14848 states, 10343 states have (on average 1.2799961326501015) internal successors, (13239), 10609 states have internal predecessors, (13239), 3793 states have call successors, (3793), 716 states have call predecessors, (3793), 709 states have return successors, (3819), 3732 states have call predecessors, (3819), 3789 states have call successors, (3819) [2021-11-12 23:17:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14848 states to 14848 states and 20851 transitions. [2021-11-12 23:17:02,744 INFO L78 Accepts]: Start accepts. Automaton has 14848 states and 20851 transitions. Word has length 131 [2021-11-12 23:17:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:02,745 INFO L470 AbstractCegarLoop]: Abstraction has 14848 states and 20851 transitions. [2021-11-12 23:17:02,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-12 23:17:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 14848 states and 20851 transitions. [2021-11-12 23:17:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-12 23:17:02,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:02,756 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:02,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:02,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:02,970 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:17:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash 404148129, now seen corresponding path program 1 times [2021-11-12 23:17:02,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:02,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954476035] [2021-11-12 23:17:02,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:02,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:02,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:02,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:03,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:17:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:04,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:17:04,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-12 23:17:05,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-12 23:17:05,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:05,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954476035] [2021-11-12 23:17:05,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954476035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:05,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:05,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:17:05,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912781939] [2021-11-12 23:17:05,719 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:05,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:17:05,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:05,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:17:05,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:05,721 INFO L87 Difference]: Start difference. First operand 14848 states and 20851 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:17:07,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:17:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:12,719 INFO L93 Difference]: Finished difference Result 40236 states and 56123 transitions. [2021-11-12 23:17:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:12,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 148 [2021-11-12 23:17:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:12,865 INFO L225 Difference]: With dead ends: 40236 [2021-11-12 23:17:12,865 INFO L226 Difference]: Without dead ends: 25411 [2021-11-12 23:17:12,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:12,930 INFO L933 BasicCegarLoop]: 3164 mSDtfsCounter, 4820 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 567 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5498.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 6289 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.79ms SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6163.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:12,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4820 Valid, 6289 Invalid, 1577 Unknown, 0 Unchecked, 22.79ms Time], IncrementalHoareTripleChecker [567 Valid, 1009 Invalid, 1 Unknown, 0 Unchecked, 6163.63ms Time] [2021-11-12 23:17:12,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25411 states. [2021-11-12 23:17:14,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25411 to 25351. [2021-11-12 23:17:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25351 states, 17757 states have (on average 1.2728501436053388) internal successors, (22602), 18175 states have internal predecessors, (22602), 6229 states have call successors, (6229), 1377 states have call predecessors, (6229), 1362 states have return successors, (6245), 6137 states have call predecessors, (6245), 6225 states have call successors, (6245) [2021-11-12 23:17:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25351 states to 25351 states and 35076 transitions. [2021-11-12 23:17:14,290 INFO L78 Accepts]: Start accepts. Automaton has 25351 states and 35076 transitions. Word has length 148 [2021-11-12 23:17:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:14,291 INFO L470 AbstractCegarLoop]: Abstraction has 25351 states and 35076 transitions. [2021-11-12 23:17:14,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:17:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 25351 states and 35076 transitions. [2021-11-12 23:17:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 23:17:14,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:14,295 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:14,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:14,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:14,511 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:17:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1597378210, now seen corresponding path program 1 times [2021-11-12 23:17:14,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:14,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163590712] [2021-11-12 23:17:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:14,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:14,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:14,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:14,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:17:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:16,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:17:16,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-12 23:17:16,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-12 23:17:17,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:17,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163590712] [2021-11-12 23:17:17,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163590712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:17,141 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:17,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:17:17,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749341143] [2021-11-12 23:17:17,142 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:17,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:17:17,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:17,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:17:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:17,143 INFO L87 Difference]: Start difference. First operand 25351 states and 35076 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 23:17:19,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:17:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:23,566 INFO L93 Difference]: Finished difference Result 83679 states and 114806 transitions. [2021-11-12 23:17:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 150 [2021-11-12 23:17:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:24,021 INFO L225 Difference]: With dead ends: 83679 [2021-11-12 23:17:24,021 INFO L226 Difference]: Without dead ends: 58351 [2021-11-12 23:17:24,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:24,108 INFO L933 BasicCegarLoop]: 3431 mSDtfsCounter, 4061 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4400.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4061 SdHoareTripleChecker+Valid, 9297 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.40ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4780.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:24,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4061 Valid, 9297 Invalid, 796 Unknown, 0 Unchecked, 22.40ms Time], IncrementalHoareTripleChecker [15 Valid, 780 Invalid, 1 Unknown, 0 Unchecked, 4780.56ms Time] [2021-11-12 23:17:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58351 states. [2021-11-12 23:17:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58351 to 58263. [2021-11-12 23:17:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58263 states, 40615 states have (on average 1.2571217530469039) internal successors, (51058), 41600 states have internal predecessors, (51058), 14186 states have call successors, (14186), 3510 states have call predecessors, (14186), 3459 states have return successors, (14310), 13884 states have call predecessors, (14310), 14182 states have call successors, (14310) [2021-11-12 23:17:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58263 states to 58263 states and 79554 transitions. [2021-11-12 23:17:27,235 INFO L78 Accepts]: Start accepts. Automaton has 58263 states and 79554 transitions. Word has length 150 [2021-11-12 23:17:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:27,237 INFO L470 AbstractCegarLoop]: Abstraction has 58263 states and 79554 transitions. [2021-11-12 23:17:27,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 23:17:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 58263 states and 79554 transitions. [2021-11-12 23:17:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-12 23:17:27,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:27,241 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:27,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:27,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:27,455 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:17:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:27,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1641972724, now seen corresponding path program 1 times [2021-11-12 23:17:27,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:27,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830954588] [2021-11-12 23:17:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:27,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:27,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:27,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:27,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:17:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:29,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:17:29,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-12 23:17:30,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-12 23:17:30,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:30,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830954588] [2021-11-12 23:17:30,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830954588] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:30,393 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:30,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:17:30,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818464135] [2021-11-12 23:17:30,394 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:30,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:17:30,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:30,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:17:30,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:17:30,395 INFO L87 Difference]: Start difference. First operand 58263 states and 79554 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-12 23:17:32,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:17:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:35,496 INFO L93 Difference]: Finished difference Result 149887 states and 204703 transitions. [2021-11-12 23:17:35,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:17:35,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 153 [2021-11-12 23:17:35,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:35,986 INFO L225 Difference]: With dead ends: 149887 [2021-11-12 23:17:35,986 INFO L226 Difference]: Without dead ends: 91647 [2021-11-12 23:17:36,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:17:36,164 INFO L933 BasicCegarLoop]: 2932 mSDtfsCounter, 2178 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2225.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.80ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2269.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:36,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2178 Valid, 5360 Invalid, 59 Unknown, 0 Unchecked, 9.80ms Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 1 Unknown, 0 Unchecked, 2269.19ms Time] [2021-11-12 23:17:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91647 states. [2021-11-12 23:17:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91647 to 91593. [2021-11-12 23:17:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91593 states, 63697 states have (on average 1.2565112956654159) internal successors, (80036), 65329 states have internal predecessors, (80036), 22269 states have call successors, (22269), 5725 states have call predecessors, (22269), 5624 states have return successors, (22527), 21648 states have call predecessors, (22527), 22265 states have call successors, (22527) [2021-11-12 23:17:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91593 states to 91593 states and 124832 transitions. [2021-11-12 23:17:40,203 INFO L78 Accepts]: Start accepts. Automaton has 91593 states and 124832 transitions. Word has length 153 [2021-11-12 23:17:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:40,204 INFO L470 AbstractCegarLoop]: Abstraction has 91593 states and 124832 transitions. [2021-11-12 23:17:40,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-12 23:17:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 91593 states and 124832 transitions. [2021-11-12 23:17:40,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-12 23:17:40,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:40,208 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:40,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:40,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:40,423 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:17:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:40,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1436957213, now seen corresponding path program 1 times [2021-11-12 23:17:40,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:40,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923121621] [2021-11-12 23:17:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:40,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:40,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:40,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:40,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f087c84-6e71-4872-93ea-8c10e79208a9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:17:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:42,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:17:42,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-12 23:17:42,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-11-12 23:17:43,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:43,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923121621] [2021-11-12 23:17:43,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923121621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:43,288 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:43,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:17:43,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332688206] [2021-11-12 23:17:43,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:43,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:17:43,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:17:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:43,296 INFO L87 Difference]: Start difference. First operand 91593 states and 124832 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-12 23:17:45,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:17:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:56,855 INFO L93 Difference]: Finished difference Result 364165 states and 496625 transitions. [2021-11-12 23:17:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 154 [2021-11-12 23:17:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:58,274 INFO L225 Difference]: With dead ends: 364165 [2021-11-12 23:17:58,274 INFO L226 Difference]: Without dead ends: 272595 [2021-11-12 23:17:58,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:58,913 INFO L933 BasicCegarLoop]: 3476 mSDtfsCounter, 4914 mSDsluCounter, 6307 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4759.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4914 SdHoareTripleChecker+Valid, 9783 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.13ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5174.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:58,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4914 Valid, 9783 Invalid, 966 Unknown, 0 Unchecked, 21.13ms Time], IncrementalHoareTripleChecker [11 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 5174.33ms Time] [2021-11-12 23:17:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272595 states.