./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/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_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:30:17,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:30:17,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:30:17,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:30:17,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:30:17,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:30:17,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:30:17,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:30:17,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:30:17,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:30:17,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:30:17,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:30:17,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:30:17,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:30:17,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:30:17,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:30:17,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:30:17,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:30:17,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:30:17,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:30:17,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:30:17,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:30:17,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:30:17,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:30:17,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:30:17,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:30:17,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:30:17,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:30:17,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:30:17,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:30:17,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:30:17,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:30:17,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:30:17,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:30:17,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:30:17,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:30:17,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:30:17,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:30:17,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:30:17,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:30:17,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:30:17,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:30:17,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:30:17,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:30:17,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:30:17,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:30:17,457 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:30:17,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:30:17,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:30:17,457 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:30:17,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:30:17,458 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:30:17,458 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:30:17,458 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:30:17,458 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:30:17,459 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:30:17,459 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:30:17,459 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:30:17,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:30:17,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:30:17,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:30:17,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:30:17,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:30:17,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:30:17,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:30:17,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:30:17,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:30:17,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:30:17,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:30:17,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:30:17,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:30:17,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:30:17,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:30:17,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:30:17,463 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:30:17,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:30:17,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:30:17,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:30:17,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:30:17,464 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_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c [2021-11-19 14:30:17,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:30:17,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:30:17,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:30:17,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:30:17,766 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:30:17,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-19 14:30:17,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data/fddae5a39/b84120c428594ed9b439ce0d77e7ffbb/FLAG313f35f83 [2021-11-19 14:30:18,922 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:30:18,922 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-19 14:30:19,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data/fddae5a39/b84120c428594ed9b439ce0d77e7ffbb/FLAG313f35f83 [2021-11-19 14:30:19,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data/fddae5a39/b84120c428594ed9b439ce0d77e7ffbb [2021-11-19 14:30:19,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:30:19,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:30:19,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:30:19,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:30:19,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:30:19,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:30:19" (1/1) ... [2021-11-19 14:30:19,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58edaee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:19, skipping insertion in model container [2021-11-19 14:30:19,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:30:19" (1/1) ... [2021-11-19 14:30:19,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:30:19,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:30:21,365 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:30:21,367 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:30:22,443 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:22,446 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:22,447 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:22,447 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:22,501 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:30:22,563 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) [2021-11-19 14:30:22,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@410837a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:22, skipping insertion in model container [2021-11-19 14:30:22,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:30:22,564 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:30:22,567 INFO L158 Benchmark]: Toolchain (without parser) took 3291.27ms. Allocated memory was 119.5MB in the beginning and 199.2MB in the end (delta: 79.7MB). Free memory was 92.1MB in the beginning and 146.3MB in the end (delta: -54.2MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. [2021-11-19 14:30:22,568 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:30:22,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3288.31ms. Allocated memory was 119.5MB in the beginning and 199.2MB in the end (delta: 79.7MB). Free memory was 91.7MB in the beginning and 146.3MB in the end (delta: -54.5MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. [2021-11-19 14:30:22,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3288.31ms. Allocated memory was 119.5MB in the beginning and 199.2MB in the end (delta: 79.7MB). Free memory was 91.7MB in the beginning and 146.3MB in the end (delta: -54.5MB). Peak memory consumption was 74.7MB. 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_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/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_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:30:25,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:30:25,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:30:25,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:30:25,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:30:25,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:30:25,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:30:25,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:30:25,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:30:25,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:30:25,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:30:25,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:30:25,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:30:25,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:30:25,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:30:25,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:30:25,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:30:25,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:30:25,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:30:25,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:30:25,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:30:25,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:30:25,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:30:25,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:30:25,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:30:25,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:30:25,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:30:25,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:30:25,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:30:25,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:30:25,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:30:25,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:30:25,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:30:25,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:30:25,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:30:25,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:30:25,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:30:25,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:30:25,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:30:25,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:30:25,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:30:25,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:30:25,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:30:25,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:30:25,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:30:25,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:30:25,286 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:30:25,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:30:25,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:30:25,287 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:30:25,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:30:25,287 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:30:25,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:30:25,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:30:25,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:30:25,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:30:25,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:30:25,291 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:30:25,291 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:30:25,291 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:30:25,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:30:25,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:30:25,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:30:25,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:30:25,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:30:25,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:30:25,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:30:25,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:30:25,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:30:25,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:30:25,294 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:30:25,294 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:30:25,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:30:25,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:30:25,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:30:25,295 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_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c [2021-11-19 14:30:25,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:30:25,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:30:25,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:30:25,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:30:25,785 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:30:25,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-19 14:30:25,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data/ffea2e511/a873ae6be4644237a7c6e986e44da505/FLAGa68174fad [2021-11-19 14:30:27,084 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:30:27,085 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-19 14:30:27,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data/ffea2e511/a873ae6be4644237a7c6e986e44da505/FLAGa68174fad [2021-11-19 14:30:27,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/data/ffea2e511/a873ae6be4644237a7c6e986e44da505 [2021-11-19 14:30:27,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:30:27,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:30:27,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:30:27,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:30:27,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:30:27,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:30:27" (1/1) ... [2021-11-19 14:30:27,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a81c7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:27, skipping insertion in model container [2021-11-19 14:30:27,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:30:27" (1/1) ... [2021-11-19 14:30:27,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:30:27,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:30:30,495 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:30,498 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:30,499 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:30,499 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:30,527 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:30:30,581 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:30:30,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:30:31,147 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:31,147 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:31,148 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:31,149 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:31,156 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:30:31,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:30:31,621 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:31,621 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:31,622 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:31,634 WARN L230 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_b717383a-08fb-4599-9c7e-354f1d003375/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] [2021-11-19 14:30:31,648 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:30:32,028 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:30:32,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32 WrapperNode [2021-11-19 14:30:32,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:30:32,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:30:32,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:30:32,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:30:32,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,371 INFO L137 Inliner]: procedures = 437, calls = 1852, calls flagged for inlining = 204, calls inlined = 187, statements flattened = 4658 [2021-11-19 14:30:32,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:30:32,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:30:32,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:30:32,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:30:32,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:30:32,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:30:32,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:30:32,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:30:32,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (1/1) ... [2021-11-19 14:30:32,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:30:32,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:30:32,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:30:32,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:30:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 14:30:32,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 14:30:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:30:32,776 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:30:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:30:32,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:30:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:30:32,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:30:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:30:32,778 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:30:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-19 14:30:32,778 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-19 14:30:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-19 14:30:32,778 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-19 14:30:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure desc_to_dma [2021-11-19 14:30:32,779 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_to_dma [2021-11-19 14:30:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 14:30:32,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 14:30:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-19 14:30:32,779 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-19 14:30:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:30:32,780 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:30:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 14:30:32,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 14:30:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:30:32,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:30:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure mii_write [2021-11-19 14:30:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_write [2021-11-19 14:30:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:30:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:30:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 14:30:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 14:30:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:30:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:30:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:30:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:30:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 14:30:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 14:30:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast [2021-11-19 14:30:32,783 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast [2021-11-19 14:30:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 14:30:32,783 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 14:30:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:30:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-19 14:30:32,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-19 14:30:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:30:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:30:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:30:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:30:32,785 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:30:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 14:30:32,785 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 14:30:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:30:32,785 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:30:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 14:30:32,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 14:30:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:30:32,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:30:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:30:32,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:30:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:30:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:30:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 14:30:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 14:30:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:30:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:30:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:30:32,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:30:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 14:30:32,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 14:30:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 14:30:32,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 14:30:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:30:32,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:30:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:30:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:30:32,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:30:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:30:32,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:30:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure rio_close [2021-11-19 14:30:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_close [2021-11-19 14:30:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:30:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2021-11-19 14:30:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2021-11-19 14:30:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:30:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:30:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:30:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:30:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:30:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:30:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:30:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-19 14:30:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-19 14:30:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:30:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:30:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:30:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure mii_read [2021-11-19 14:30:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_read [2021-11-19 14:30:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-19 14:30:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-19 14:30:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:30:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:30:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:30:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:30:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 14:30:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 14:30:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:30:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:30:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:30:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:30:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:30:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:30:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:30:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:30:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:30:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:30:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:30:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:30:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:30:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:30:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 14:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 14:30:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2021-11-19 14:30:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2021-11-19 14:30:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 14:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 14:30:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 14:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 14:30:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-19 14:30:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-19 14:30:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:30:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-19 14:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-19 14:30:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-19 14:30:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-19 14:30:32,799 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 14:30:32,800 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 14:30:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:30:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netdev_private [2021-11-19 14:30:32,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netdev_private [2021-11-19 14:30:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure rio_open [2021-11-19 14:30:32,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_open [2021-11-19 14:30:32,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-19 14:30:32,801 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-19 14:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2021-11-19 14:30:32,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2021-11-19 14:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:30:32,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 14:30:32,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 14:30:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:30:32,803 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:30:32,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2021-11-19 14:30:32,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2021-11-19 14:30:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:30:32,804 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:30:32,804 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure rio_free_tx [2021-11-19 14:30:32,804 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_free_tx [2021-11-19 14:30:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure rio_tx_timeout [2021-11-19 14:30:32,804 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_tx_timeout [2021-11-19 14:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netdev_private [2021-11-19 14:30:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netdev_private [2021-11-19 14:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:30:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure rio_remove1 [2021-11-19 14:30:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_remove1 [2021-11-19 14:30:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:30:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:30:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2021-11-19 14:30:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2021-11-19 14:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2021-11-19 14:30:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2021-11-19 14:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:30:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:30:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure mii_set_media [2021-11-19 14:30:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_set_media [2021-11-19 14:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 14:30:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 14:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 14:30:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 14:30:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:30:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:30:33,671 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:30:33,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:30:33,799 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:31:13,445 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:31:13,520 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:31:13,544 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:31:13,545 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 14:31:13,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:31:13 BoogieIcfgContainer [2021-11-19 14:31:13,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:31:13,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:31:13,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:31:13,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:31:13,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:30:27" (1/3) ... [2021-11-19 14:31:13,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d9030d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:31:13, skipping insertion in model container [2021-11-19 14:31:13,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:30:32" (2/3) ... [2021-11-19 14:31:13,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d9030d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:31:13, skipping insertion in model container [2021-11-19 14:31:13,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:31:13" (3/3) ... [2021-11-19 14:31:13,561 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-19 14:31:13,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:31:13,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:31:13,637 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:31:13,644 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 [2021-11-19 14:31:13,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:31:13,728 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) [2021-11-19 14:31:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 14:31:13,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:13,752 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] [2021-11-19 14:31:13,753 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)] === [2021-11-19 14:31:13,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash -19671684, now seen corresponding path program 1 times [2021-11-19 14:31:13,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:13,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763936365] [2021-11-19 14:31:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:13,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:13,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:13,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:13,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:31:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:15,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:31:15,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-19 14:31:15,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-19 14:31:16,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:16,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763936365] [2021-11-19 14:31:16,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763936365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:16,368 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:16,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:31:16,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380135059] [2021-11-19 14:31:16,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:16,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:31:16,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:31:16,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:16,423 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) [2021-11-19 14:31:18,587 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 [] [2021-11-19 14:31:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:26,570 INFO L93 Difference]: Finished difference Result 6975 states and 10005 transitions. [2021-11-19 14:31:26,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:31:26,577 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 [2021-11-19 14:31:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:26,669 INFO L225 Difference]: With dead ends: 6975 [2021-11-19 14:31:26,669 INFO L226 Difference]: Without dead ends: 5169 [2021-11-19 14:31:26,697 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 [2021-11-19 14:31:26,703 INFO L933 BasicCegarLoop]: 3419 mSDtfsCounter, 6338 mSDsluCounter, 3926 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 889 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 7345 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:26,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 7345 Invalid, 1862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [889 Valid, 972 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-19 14:31:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2021-11-19 14:31:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 5142. [2021-11-19 14:31:27,202 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) [2021-11-19 14:31:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7213 transitions. [2021-11-19 14:31:27,269 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7213 transitions. Word has length 127 [2021-11-19 14:31:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:27,272 INFO L470 AbstractCegarLoop]: Abstraction has 5142 states and 7213 transitions. [2021-11-19 14:31:27,272 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) [2021-11-19 14:31:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7213 transitions. [2021-11-19 14:31:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-19 14:31:27,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:27,284 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] [2021-11-19 14:31:27,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:27,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:27,501 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)] === [2021-11-19 14:31:27,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1332979870, now seen corresponding path program 1 times [2021-11-19 14:31:27,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:27,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872462282] [2021-11-19 14:31:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:27,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:27,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:27,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:27,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:31:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:31:29,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-19 14:31:29,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-19 14:31:29,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:29,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872462282] [2021-11-19 14:31:29,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872462282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:29,905 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:29,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:31:29,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037811776] [2021-11-19 14:31:29,905 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:29,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:31:29,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:29,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:31:29,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:29,909 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) [2021-11-19 14:31:32,051 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 [] [2021-11-19 14:31:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:37,576 INFO L93 Difference]: Finished difference Result 20031 states and 28123 transitions. [2021-11-19 14:31:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:31:37,577 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 [2021-11-19 14:31:37,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:37,745 INFO L225 Difference]: With dead ends: 20031 [2021-11-19 14:31:37,746 INFO L226 Difference]: Without dead ends: 14912 [2021-11-19 14:31:37,778 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 [2021-11-19 14:31:37,780 INFO L933 BasicCegarLoop]: 3433 mSDtfsCounter, 4795 mSDsluCounter, 6159 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4795 SdHoareTripleChecker+Valid, 9592 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:37,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4795 Valid, 9592 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-19 14:31:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14912 states. [2021-11-19 14:31:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14912 to 14848. [2021-11-19 14:31:38,935 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) [2021-11-19 14:31:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14848 states to 14848 states and 20851 transitions. [2021-11-19 14:31:39,051 INFO L78 Accepts]: Start accepts. Automaton has 14848 states and 20851 transitions. Word has length 131 [2021-11-19 14:31:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:39,055 INFO L470 AbstractCegarLoop]: Abstraction has 14848 states and 20851 transitions. [2021-11-19 14:31:39,056 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) [2021-11-19 14:31:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 14848 states and 20851 transitions. [2021-11-19 14:31:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-19 14:31:39,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:39,065 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] [2021-11-19 14:31:39,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:39,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:39,291 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)] === [2021-11-19 14:31:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:39,291 INFO L85 PathProgramCache]: Analyzing trace with hash 404148129, now seen corresponding path program 1 times [2021-11-19 14:31:39,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:39,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159859226] [2021-11-19 14:31:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:39,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:39,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:39,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:39,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:31:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:40,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:31:40,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-19 14:31:41,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-19 14:31:41,607 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:41,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159859226] [2021-11-19 14:31:41,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159859226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:41,608 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:41,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:31:41,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652644183] [2021-11-19 14:31:41,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:41,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:31:41,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:31:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:41,611 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) [2021-11-19 14:31:43,764 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 [] [2021-11-19 14:31:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:31:50,581 INFO L93 Difference]: Finished difference Result 40236 states and 56123 transitions. [2021-11-19 14:31:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:31:50,589 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 [2021-11-19 14:31:50,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:31:50,813 INFO L225 Difference]: With dead ends: 40236 [2021-11-19 14:31:50,813 INFO L226 Difference]: Without dead ends: 25411 [2021-11-19 14:31:51,010 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 [2021-11-19 14:31:51,017 INFO L933 BasicCegarLoop]: 3164 mSDtfsCounter, 4820 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 567 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 6289 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:31:51,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4820 Valid, 6289 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 1009 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-11-19 14:31:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25411 states. [2021-11-19 14:31:52,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25411 to 25351. [2021-11-19 14:31:52,457 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) [2021-11-19 14:31:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25351 states to 25351 states and 35076 transitions. [2021-11-19 14:31:52,588 INFO L78 Accepts]: Start accepts. Automaton has 25351 states and 35076 transitions. Word has length 148 [2021-11-19 14:31:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:31:52,588 INFO L470 AbstractCegarLoop]: Abstraction has 25351 states and 35076 transitions. [2021-11-19 14:31:52,589 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) [2021-11-19 14:31:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 25351 states and 35076 transitions. [2021-11-19 14:31:52,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 14:31:52,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:31:52,594 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] [2021-11-19 14:31:52,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:31:52,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:31:52,813 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)] === [2021-11-19 14:31:52,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:31:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1597378210, now seen corresponding path program 1 times [2021-11-19 14:31:52,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:31:52,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690315327] [2021-11-19 14:31:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:31:52,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:31:52,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:31:52,818 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:31:52,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:31:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:31:53,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:31:53,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:31:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-19 14:31:54,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:31:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-19 14:31:54,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:31:54,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690315327] [2021-11-19 14:31:54,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690315327] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:31:54,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:31:54,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:31:54,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986153360] [2021-11-19 14:31:54,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:31:54,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:31:54,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:31:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:31:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:31:54,807 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) [2021-11-19 14:31:56,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:32:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:02,449 INFO L93 Difference]: Finished difference Result 83679 states and 114806 transitions. [2021-11-19 14:32:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:32:02,450 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 [2021-11-19 14:32:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:02,955 INFO L225 Difference]: With dead ends: 83679 [2021-11-19 14:32:02,956 INFO L226 Difference]: Without dead ends: 58351 [2021-11-19 14:32:03,071 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 [2021-11-19 14:32:03,074 INFO L933 BasicCegarLoop]: 3431 mSDtfsCounter, 4061 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4061 SdHoareTripleChecker+Valid, 9297 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:03,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4061 Valid, 9297 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 780 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 14:32:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58351 states. [2021-11-19 14:32:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58351 to 58263. [2021-11-19 14:32:06,288 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) [2021-11-19 14:32:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58263 states to 58263 states and 79554 transitions. [2021-11-19 14:32:06,972 INFO L78 Accepts]: Start accepts. Automaton has 58263 states and 79554 transitions. Word has length 150 [2021-11-19 14:32:06,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:32:06,974 INFO L470 AbstractCegarLoop]: Abstraction has 58263 states and 79554 transitions. [2021-11-19 14:32:06,974 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) [2021-11-19 14:32:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 58263 states and 79554 transitions. [2021-11-19 14:32:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-19 14:32:06,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:32:06,979 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] [2021-11-19 14:32:07,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:32:07,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:32:07,203 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)] === [2021-11-19 14:32:07,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:32:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1641972724, now seen corresponding path program 1 times [2021-11-19 14:32:07,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:32:07,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874644834] [2021-11-19 14:32:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:32:07,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:32:07,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:32:07,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:32:07,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:32:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:32:08,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:32:08,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:32:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-19 14:32:09,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-19 14:32:09,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:09,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874644834] [2021-11-19 14:32:09,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874644834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:32:09,523 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:32:09,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:32:09,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796530246] [2021-11-19 14:32:09,524 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:09,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:32:09,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:09,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:32:09,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:32:09,525 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) [2021-11-19 14:32:11,665 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 [] [2021-11-19 14:32:15,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:15,577 INFO L93 Difference]: Finished difference Result 149887 states and 204703 transitions. [2021-11-19 14:32:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:32:15,578 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 [2021-11-19 14:32:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:16,270 INFO L225 Difference]: With dead ends: 149887 [2021-11-19 14:32:16,270 INFO L226 Difference]: Without dead ends: 91647 [2021-11-19 14:32:16,572 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 [2021-11-19 14:32:16,573 INFO L933 BasicCegarLoop]: 2932 mSDtfsCounter, 2178 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:16,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2178 Valid, 5360 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:32:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91647 states. [2021-11-19 14:32:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91647 to 91593. [2021-11-19 14:32:21,695 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) [2021-11-19 14:32:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91593 states to 91593 states and 124832 transitions. [2021-11-19 14:32:22,181 INFO L78 Accepts]: Start accepts. Automaton has 91593 states and 124832 transitions. Word has length 153 [2021-11-19 14:32:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:32:22,182 INFO L470 AbstractCegarLoop]: Abstraction has 91593 states and 124832 transitions. [2021-11-19 14:32:22,183 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) [2021-11-19 14:32:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 91593 states and 124832 transitions. [2021-11-19 14:32:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-19 14:32:22,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:32:22,189 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] [2021-11-19 14:32:22,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:32:22,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:32:22,406 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)] === [2021-11-19 14:32:22,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:32:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1436957213, now seen corresponding path program 1 times [2021-11-19 14:32:22,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:32:22,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322045317] [2021-11-19 14:32:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:32:22,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:32:22,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:32:22,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:32:22,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b717383a-08fb-4599-9c7e-354f1d003375/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:32:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:32:23,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:32:23,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:32:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-19 14:32:24,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-11-19 14:32:24,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:32:24,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322045317] [2021-11-19 14:32:24,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322045317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:32:24,455 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:32:24,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:32:24,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684346765] [2021-11-19 14:32:24,455 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:32:24,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:32:24,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:32:24,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:32:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:32:24,457 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) [2021-11-19 14:32:26,584 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 [] [2021-11-19 14:32:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:32:41,538 INFO L93 Difference]: Finished difference Result 364165 states and 496625 transitions. [2021-11-19 14:32:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:32:41,539 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 [2021-11-19 14:32:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:32:43,836 INFO L225 Difference]: With dead ends: 364165 [2021-11-19 14:32:43,837 INFO L226 Difference]: Without dead ends: 272595 [2021-11-19 14:32:44,260 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 [2021-11-19 14:32:44,261 INFO L933 BasicCegarLoop]: 3476 mSDtfsCounter, 4914 mSDsluCounter, 6307 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4914 SdHoareTripleChecker+Valid, 9783 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:32:44,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4914 Valid, 9783 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-19 14:32:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272595 states.