./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-wireless-cw1200-cw1200_wlan_spi.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_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/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_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/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-wireless-cw1200-cw1200_wlan_spi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/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_3efa3fac-f562-46f9-9aed-a6278d39322b/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 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:03:46,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:03:46,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:03:46,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:03:46,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:03:46,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:03:46,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:03:46,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:03:46,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:03:46,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:03:46,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:03:46,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:03:46,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:03:46,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:03:46,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:03:46,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:03:46,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:03:46,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:03:46,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:03:46,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:03:46,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:03:46,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:03:46,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:03:46,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:03:46,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:03:46,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:03:46,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:03:46,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:03:46,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:03:46,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:03:46,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:03:46,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:03:46,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:03:46,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:03:46,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:03:46,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:03:46,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:03:46,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:03:46,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:03:46,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:03:46,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:03:46,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:03:46,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:03:46,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:03:46,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:03:46,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:03:46,427 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:03:46,428 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:03:46,428 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:03:46,428 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:03:46,435 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:03:46,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:03:46,437 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:03:46,438 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:03:46,438 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:03:46,438 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:03:46,439 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:03:46,439 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:03:46,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:03:46,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:03:46,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:03:46,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:03:46,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:03:46,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:03:46,442 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:03:46,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:03:46,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:03:46,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:03:46,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:03:46,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:03:46,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:03:46,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:03:46,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:03:46,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:03:46,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:03:46,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:03:46,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:03:46,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:03:46,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:03:46,448 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_3efa3fac-f562-46f9-9aed-a6278d39322b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 [2021-11-19 14:03:46,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:03:46,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:03:46,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:03:46,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:03:46,859 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:03:46,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-19 14:03:46,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data/7cccbafee/f46674b5891a41029d13cd380d8e3e87/FLAGcf74ca146 [2021-11-19 14:03:48,052 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:03:48,053 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-19 14:03:48,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data/7cccbafee/f46674b5891a41029d13cd380d8e3e87/FLAGcf74ca146 [2021-11-19 14:03:48,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data/7cccbafee/f46674b5891a41029d13cd380d8e3e87 [2021-11-19 14:03:48,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:03:48,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:03:48,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:03:48,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:03:48,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:03:48,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:48" (1/1) ... [2021-11-19 14:03:48,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702319e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:48, skipping insertion in model container [2021-11-19 14:03:48,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:48" (1/1) ... [2021-11-19 14:03:48,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:03:48,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:03:50,149 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 14:03:50,175 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 14:03:50,182 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 14:03:50,221 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 14:03:50,305 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 14:03:50,310 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 14:03:50,325 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 14:03:50,328 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 14:03:50,334 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 14:03:50,723 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 14:03:50,723 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 14:03:50,777 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 14:03:50,783 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 14:03:50,852 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 14:03:50,863 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 14:03:51,443 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2021-11-19 14:03:51,446 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2021-11-19 14:03:51,446 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2021-11-19 14:03:51,447 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2021-11-19 14:03:51,453 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:03:51,473 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 14:03:51,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28d6b1c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:51, skipping insertion in model container [2021-11-19 14:03:51,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:03:51,475 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:03:51,477 INFO L158 Benchmark]: Toolchain (without parser) took 3081.03ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 54.5MB in the beginning and 59.9MB in the end (delta: -5.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2021-11-19 14:03:51,478 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 98.6MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:03:51,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3075.56ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 54.3MB in the beginning and 59.9MB in the end (delta: -5.7MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2021-11-19 14:03:51,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 98.6MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3075.56ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 54.3MB in the beginning and 59.9MB in the end (delta: -5.7MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6371]: 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_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/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_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/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-wireless-cw1200-cw1200_wlan_spi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/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_3efa3fac-f562-46f9-9aed-a6278d39322b/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 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:03:53,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:03:53,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:03:53,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:03:53,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:03:53,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:03:53,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:03:53,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:03:53,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:03:53,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:03:53,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:03:53,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:03:53,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:03:53,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:03:53,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:03:53,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:03:53,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:03:53,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:03:53,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:03:53,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:03:53,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:03:53,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:03:53,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:03:53,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:03:53,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:03:53,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:03:53,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:03:53,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:03:53,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:03:53,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:03:53,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:03:53,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:03:53,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:03:53,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:03:53,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:03:53,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:03:53,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:03:53,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:03:53,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:03:53,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:03:53,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:03:53,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:03:53,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:03:53,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:03:53,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:03:53,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:03:53,894 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:03:53,895 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:03:53,895 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:03:53,895 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:03:53,895 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:03:53,896 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:03:53,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:03:53,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:03:53,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:03:53,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:03:53,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:03:53,898 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:03:53,898 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:03:53,899 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:03:53,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:03:53,899 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:03:53,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:03:53,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:03:53,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:03:53,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:03:53,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:03:53,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:03:53,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:03:53,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:03:53,902 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:03:53,902 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:03:53,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:03:53,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:03:53,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:03:53,903 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_3efa3fac-f562-46f9-9aed-a6278d39322b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 [2021-11-19 14:03:54,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:03:54,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:03:54,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:03:54,325 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:03:54,325 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:03:54,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-19 14:03:54,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data/f3ee11d32/552e9672f2e94807be502ac5c22a2e85/FLAG22a66eebd [2021-11-19 14:03:55,508 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:03:55,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-19 14:03:55,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data/f3ee11d32/552e9672f2e94807be502ac5c22a2e85/FLAG22a66eebd [2021-11-19 14:03:55,852 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/data/f3ee11d32/552e9672f2e94807be502ac5c22a2e85 [2021-11-19 14:03:55,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:03:55,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:03:55,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:03:55,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:03:55,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:03:55,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:55" (1/1) ... [2021-11-19 14:03:55,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4358bbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:55, skipping insertion in model container [2021-11-19 14:03:55,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:55" (1/1) ... [2021-11-19 14:03:55,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:03:56,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:03:58,700 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2021-11-19 14:03:58,703 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2021-11-19 14:03:58,704 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2021-11-19 14:03:58,704 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2021-11-19 14:03:58,710 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:03:58,748 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:03:58,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:03:59,311 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2021-11-19 14:03:59,311 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2021-11-19 14:03:59,312 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2021-11-19 14:03:59,312 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2021-11-19 14:03:59,316 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:03:59,333 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:03:59,807 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2021-11-19 14:03:59,824 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2021-11-19 14:03:59,826 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2021-11-19 14:03:59,827 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_3efa3fac-f562-46f9-9aed-a6278d39322b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2021-11-19 14:03:59,831 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:04:00,079 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:04:00,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00 WrapperNode [2021-11-19 14:04:00,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:04:00,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:04:00,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:04:00,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:04:00,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,327 INFO L137 Inliner]: procedures = 332, calls = 928, calls flagged for inlining = 152, calls inlined = 139, statements flattened = 2576 [2021-11-19 14:04:00,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:04:00,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:04:00,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:04:00,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:04:00,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:04:00,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:04:00,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:04:00,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:04:00,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (1/1) ... [2021-11-19 14:04:00,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:04:00,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:04:00,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:04:00,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:04:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:04:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 14:04:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 14:04:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:04:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-19 14:04:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:04:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:04:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:04:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:04:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:04:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:04:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:04:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:04:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-19 14:04:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-19 14:04:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request [2021-11-19 14:04:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request [2021-11-19 14:04:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-11-19 14:04:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-11-19 14:04:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:04:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:04:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_irq_unsubscribe [2021-11-19 14:04:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_irq_unsubscribe [2021-11-19 14:04:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 14:04:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 14:04:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_unlock [2021-11-19 14:04:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_unlock [2021-11-19 14:04:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:04:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:04:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2021-11-19 14:04:00,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2021-11-19 14:04:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:04:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2021-11-19 14:04:00,634 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2021-11-19 14:04:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:04:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:04:00,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:04:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:04:00,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:04:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hwbus_priv [2021-11-19 14:04:00,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hwbus_priv [2021-11-19 14:04:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:04:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:04:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:04:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:04:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:04:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:04:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~C_INT [2021-11-19 14:04:00,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~C_INT [2021-11-19 14:04:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-11-19 14:04:00,637 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-11-19 14:04:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:04:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:04:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-19 14:04:00,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-19 14:04:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:04:00,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:04:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 14:04:00,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 14:04:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 14:04:00,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 14:04:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_probe [2021-11-19 14:04:00,639 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_probe [2021-11-19 14:04:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:04:00,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:04:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_irq_wake [2021-11-19 14:04:00,640 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_irq_wake [2021-11-19 14:04:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:04:00,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:04:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:04:00,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:04:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:04:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:04:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_disconnect [2021-11-19 14:04:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_disconnect [2021-11-19 14:04:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:04:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:04:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-11-19 14:04:00,642 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-11-19 14:04:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_direction_output [2021-11-19 14:04:00,642 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_direction_output [2021-11-19 14:04:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:04:00,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:04:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_off [2021-11-19 14:04:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_off [2021-11-19 14:04:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:04:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:04:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:04:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:04:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:04:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-19 14:04:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-19 14:04:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:04:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:04:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:04:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:04:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 14:04:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-11-19 14:04:00,645 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-11-19 14:04:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:04:00,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:04:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2021-11-19 14:04:00,645 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2021-11-19 14:04:00,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:04:00,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:04:00,646 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:04:00,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:04:00,646 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_lock [2021-11-19 14:04:00,647 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_lock [2021-11-19 14:04:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:04:00,647 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:04:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_resume [2021-11-19 14:04:00,647 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_resume [2021-11-19 14:04:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_spi_driver_exit_9_2 [2021-11-19 14:04:00,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_spi_driver_exit_9_2 [2021-11-19 14:04:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_pm [2021-11-19 14:04:00,648 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_pm [2021-11-19 14:04:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:04:00,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:04:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:04:00,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:04:01,252 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:04:01,255 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:04:01,374 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:04:13,413 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:04:15,542 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:04:15,563 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:04:15,563 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 14:04:15,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:15 BoogieIcfgContainer [2021-11-19 14:04:15,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:04:15,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:04:15,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:04:15,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:04:15,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:03:55" (1/3) ... [2021-11-19 14:04:15,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e08632f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:15, skipping insertion in model container [2021-11-19 14:04:15,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:00" (2/3) ... [2021-11-19 14:04:15,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e08632f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:15, skipping insertion in model container [2021-11-19 14:04:15,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:15" (3/3) ... [2021-11-19 14:04:15,578 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-19 14:04:15,584 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:04:15,584 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:04:15,644 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:04:15,652 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 14:04:15,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:04:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 1044 states, 748 states have (on average 1.2807486631016043) internal successors, (958), 758 states have internal predecessors, (958), 246 states have call successors, (246), 50 states have call predecessors, (246), 49 states have return successors, (237), 236 states have call predecessors, (237), 237 states have call successors, (237) [2021-11-19 14:04:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-19 14:04:15,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:15,723 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:15,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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 14:04:15,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash 946022056, now seen corresponding path program 1 times [2021-11-19 14:04:15,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:15,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447478484] [2021-11-19 14:04:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:15,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:15,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:15,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:15,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:04:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:16,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:16,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-19 14:04:17,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-11-19 14:04:17,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:17,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447478484] [2021-11-19 14:04:17,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447478484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:17,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:17,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:04:17,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000135659] [2021-11-19 14:04:17,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:17,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:04:17,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:04:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:18,006 INFO L87 Difference]: Start difference. First operand has 1044 states, 748 states have (on average 1.2807486631016043) internal successors, (958), 758 states have internal predecessors, (958), 246 states have call successors, (246), 50 states have call predecessors, (246), 49 states have return successors, (237), 236 states have call predecessors, (237), 237 states have call successors, (237) 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), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:04:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:25,861 INFO L93 Difference]: Finished difference Result 3626 states and 5100 transitions. [2021-11-19 14:04:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:04:25,865 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), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 151 [2021-11-19 14:04:25,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:25,923 INFO L225 Difference]: With dead ends: 3626 [2021-11-19 14:04:25,923 INFO L226 Difference]: Without dead ends: 2582 [2021-11-19 14:04:25,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:25,952 INFO L933 BasicCegarLoop]: 1806 mSDtfsCounter, 3029 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3029 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:25,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3029 Valid, 3695 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-19 14:04:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-11-19 14:04:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2528. [2021-11-19 14:04:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 1814 states have (on average 1.2480705622932746) internal successors, (2264), 1854 states have internal predecessors, (2264), 573 states have call successors, (573), 139 states have call predecessors, (573), 138 states have return successors, (569), 558 states have call predecessors, (569), 569 states have call successors, (569) [2021-11-19 14:04:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3406 transitions. [2021-11-19 14:04:26,316 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3406 transitions. Word has length 151 [2021-11-19 14:04:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:26,321 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 3406 transitions. [2021-11-19 14:04:26,321 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), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:04:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3406 transitions. [2021-11-19 14:04:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-19 14:04:26,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:26,336 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:26,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:26,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:26,558 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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 14:04:26,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:26,559 INFO L85 PathProgramCache]: Analyzing trace with hash 666682290, now seen corresponding path program 1 times [2021-11-19 14:04:26,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:26,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397710487] [2021-11-19 14:04:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:26,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:26,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:26,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:26,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:04:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:27,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:27,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-19 14:04:27,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-11-19 14:04:28,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:28,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397710487] [2021-11-19 14:04:28,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397710487] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:28,106 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:28,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:04:28,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61731400] [2021-11-19 14:04:28,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:28,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:04:28,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:28,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:04:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:28,110 INFO L87 Difference]: Start difference. First operand 2528 states and 3406 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 14:04:34,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:34,188 INFO L93 Difference]: Finished difference Result 9629 states and 12963 transitions. [2021-11-19 14:04:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:04:34,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 151 [2021-11-19 14:04:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:34,268 INFO L225 Difference]: With dead ends: 9629 [2021-11-19 14:04:34,269 INFO L226 Difference]: Without dead ends: 7128 [2021-11-19 14:04:34,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:34,290 INFO L933 BasicCegarLoop]: 1758 mSDtfsCounter, 2545 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:34,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2545 Valid, 4536 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-19 14:04:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7128 states. [2021-11-19 14:04:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7128 to 7102. [2021-11-19 14:04:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7102 states, 5140 states have (on average 1.2511673151750973) internal successors, (6431), 5238 states have internal predecessors, (6431), 1553 states have call successors, (1553), 407 states have call predecessors, (1553), 406 states have return successors, (1549), 1528 states have call predecessors, (1549), 1549 states have call successors, (1549) [2021-11-19 14:04:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7102 states to 7102 states and 9533 transitions. [2021-11-19 14:04:34,923 INFO L78 Accepts]: Start accepts. Automaton has 7102 states and 9533 transitions. Word has length 151 [2021-11-19 14:04:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:34,925 INFO L470 AbstractCegarLoop]: Abstraction has 7102 states and 9533 transitions. [2021-11-19 14:04:34,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 14:04:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7102 states and 9533 transitions. [2021-11-19 14:04:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:04:34,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:34,930 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:34,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:35,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:35,151 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 14:04:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1214873792, now seen corresponding path program 1 times [2021-11-19 14:04:35,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:35,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765868375] [2021-11-19 14:04:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:35,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:35,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:35,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:35,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:04:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:35,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:35,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-19 14:04:36,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-11-19 14:04:36,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:36,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765868375] [2021-11-19 14:04:36,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765868375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:36,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:36,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:04:36,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404596652] [2021-11-19 14:04:36,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:36,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:04:36,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:04:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:36,885 INFO L87 Difference]: Start difference. First operand 7102 states and 9533 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:04:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:38,371 INFO L93 Difference]: Finished difference Result 18035 states and 24165 transitions. [2021-11-19 14:04:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:04:38,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 157 [2021-11-19 14:04:38,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:38,486 INFO L225 Difference]: With dead ends: 18035 [2021-11-19 14:04:38,487 INFO L226 Difference]: Without dead ends: 10960 [2021-11-19 14:04:38,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 311 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 14:04:38,532 INFO L933 BasicCegarLoop]: 1581 mSDtfsCounter, 1164 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:38,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 2916 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:04:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2021-11-19 14:04:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 10929. [2021-11-19 14:04:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10929 states, 7890 states have (on average 1.2443599493029152) internal successors, (9818), 8061 states have internal predecessors, (9818), 2386 states have call successors, (2386), 651 states have call predecessors, (2386), 650 states have return successors, (2382), 2336 states have call predecessors, (2382), 2382 states have call successors, (2382) [2021-11-19 14:04:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10929 states to 10929 states and 14586 transitions. [2021-11-19 14:04:39,443 INFO L78 Accepts]: Start accepts. Automaton has 10929 states and 14586 transitions. Word has length 157 [2021-11-19 14:04:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:39,446 INFO L470 AbstractCegarLoop]: Abstraction has 10929 states and 14586 transitions. [2021-11-19 14:04:39,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:04:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 10929 states and 14586 transitions. [2021-11-19 14:04:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 14:04:39,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:39,454 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:39,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:39,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:39,668 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 14:04:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1153141611, now seen corresponding path program 1 times [2021-11-19 14:04:39,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:39,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405666605] [2021-11-19 14:04:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:39,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:39,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:39,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:39,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:04:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:40,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:40,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-19 14:04:41,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-11-19 14:04:41,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:41,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405666605] [2021-11-19 14:04:41,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405666605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:41,832 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:41,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:04:41,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186216908] [2021-11-19 14:04:41,835 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:41,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:04:41,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:41,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:04:41,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:41,841 INFO L87 Difference]: Start difference. First operand 10929 states and 14586 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:04:49,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:49,795 INFO L93 Difference]: Finished difference Result 41403 states and 56286 transitions. [2021-11-19 14:04:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:04:49,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 163 [2021-11-19 14:04:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:50,033 INFO L225 Difference]: With dead ends: 41403 [2021-11-19 14:04:50,034 INFO L226 Difference]: Without dead ends: 30501 [2021-11-19 14:04:50,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:50,095 INFO L933 BasicCegarLoop]: 1871 mSDtfsCounter, 3564 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:50,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3564 Valid, 4033 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-19 14:04:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30501 states. [2021-11-19 14:04:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30501 to 30391. [2021-11-19 14:04:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30391 states, 21952 states have (on average 1.2515032798833818) internal successors, (27473), 22521 states have internal predecessors, (27473), 6674 states have call successors, (6674), 1823 states have call predecessors, (6674), 1762 states have return successors, (7390), 6346 states have call predecessors, (7390), 6670 states have call successors, (7390) [2021-11-19 14:04:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30391 states to 30391 states and 41537 transitions. [2021-11-19 14:04:52,267 INFO L78 Accepts]: Start accepts. Automaton has 30391 states and 41537 transitions. Word has length 163 [2021-11-19 14:04:52,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:52,268 INFO L470 AbstractCegarLoop]: Abstraction has 30391 states and 41537 transitions. [2021-11-19 14:04:52,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:04:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 30391 states and 41537 transitions. [2021-11-19 14:04:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 14:04:52,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:52,280 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:52,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:52,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:52,503 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 14:04:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash 569844985, now seen corresponding path program 1 times [2021-11-19 14:04:52,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:52,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181352900] [2021-11-19 14:04:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:52,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:52,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:52,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:04:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:53,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:53,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-19 14:04:53,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-11-19 14:04:54,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:54,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181352900] [2021-11-19 14:04:54,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181352900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:54,846 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:54,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:04:54,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712477618] [2021-11-19 14:04:54,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:54,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:04:54,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:04:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:54,848 INFO L87 Difference]: Start difference. First operand 30391 states and 41537 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:05:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:02,407 INFO L93 Difference]: Finished difference Result 102117 states and 138653 transitions. [2021-11-19 14:05:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:05:02,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 193 [2021-11-19 14:05:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:02,959 INFO L225 Difference]: With dead ends: 102117 [2021-11-19 14:05:02,960 INFO L226 Difference]: Without dead ends: 71753 [2021-11-19 14:05:03,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:05:03,082 INFO L933 BasicCegarLoop]: 2013 mSDtfsCounter, 2556 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:03,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2556 Valid, 4310 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 14:05:03,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71753 states. [2021-11-19 14:05:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71753 to 71631. [2021-11-19 14:05:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71631 states, 51871 states have (on average 1.2414258448844249) internal successors, (64394), 53281 states have internal predecessors, (64394), 15377 states have call successors, (15377), 4529 states have call predecessors, (15377), 4380 states have return successors, (16819), 14560 states have call predecessors, (16819), 15373 states have call successors, (16819) [2021-11-19 14:05:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71631 states to 71631 states and 96590 transitions. [2021-11-19 14:05:08,030 INFO L78 Accepts]: Start accepts. Automaton has 71631 states and 96590 transitions. Word has length 193 [2021-11-19 14:05:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:08,031 INFO L470 AbstractCegarLoop]: Abstraction has 71631 states and 96590 transitions. [2021-11-19 14:05:08,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:05:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 71631 states and 96590 transitions. [2021-11-19 14:05:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-19 14:05:08,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:08,038 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:08,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 14:05:08,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:08,260 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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 14:05:08,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash 194733257, now seen corresponding path program 1 times [2021-11-19 14:05:08,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:08,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173881446] [2021-11-19 14:05:08,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:08,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:08,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:08,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:08,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:05:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:08,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:05:08,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-11-19 14:05:11,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-11-19 14:05:13,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:13,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173881446] [2021-11-19 14:05:13,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173881446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:13,244 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:13,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:05:13,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575816951] [2021-11-19 14:05:13,244 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:13,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:05:13,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:05:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:05:13,247 INFO L87 Difference]: Start difference. First operand 71631 states and 96590 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-19 14:05:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:16,162 INFO L93 Difference]: Finished difference Result 71637 states and 96595 transitions. [2021-11-19 14:05:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:05:16,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 209 [2021-11-19 14:05:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:16,644 INFO L225 Difference]: With dead ends: 71637 [2021-11-19 14:05:16,645 INFO L226 Difference]: Without dead ends: 71635 [2021-11-19 14:05:16,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:05:16,681 INFO L933 BasicCegarLoop]: 1371 mSDtfsCounter, 1281 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:16,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 4101 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:05:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71635 states. [2021-11-19 14:05:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71635 to 71635. [2021-11-19 14:05:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71635 states, 51874 states have (on average 1.2414118826387015) internal successors, (64397), 53284 states have internal predecessors, (64397), 15377 states have call successors, (15377), 4530 states have call predecessors, (15377), 4381 states have return successors, (16819), 14560 states have call predecessors, (16819), 15373 states have call successors, (16819) [2021-11-19 14:05:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71635 states to 71635 states and 96593 transitions. [2021-11-19 14:05:21,105 INFO L78 Accepts]: Start accepts. Automaton has 71635 states and 96593 transitions. Word has length 209 [2021-11-19 14:05:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:21,106 INFO L470 AbstractCegarLoop]: Abstraction has 71635 states and 96593 transitions. [2021-11-19 14:05:21,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-19 14:05:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 71635 states and 96593 transitions. [2021-11-19 14:05:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-19 14:05:21,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:21,125 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:21,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:21,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:21,346 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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 14:05:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:21,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1469888503, now seen corresponding path program 1 times [2021-11-19 14:05:21,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:21,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472901464] [2021-11-19 14:05:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:21,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:21,351 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:21,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:05:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:21,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:05:21,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-11-19 14:05:25,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-11-19 14:05:26,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:26,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472901464] [2021-11-19 14:05:26,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472901464] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:05:26,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:05:26,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:05:26,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134033252] [2021-11-19 14:05:26,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:26,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:05:26,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:26,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:05:26,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:05:26,802 INFO L87 Difference]: Start difference. First operand 71635 states and 96593 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:05:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:29,858 INFO L93 Difference]: Finished difference Result 71641 states and 96598 transitions. [2021-11-19 14:05:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:05:29,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 214 [2021-11-19 14:05:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:30,292 INFO L225 Difference]: With dead ends: 71641 [2021-11-19 14:05:30,292 INFO L226 Difference]: Without dead ends: 71639 [2021-11-19 14:05:30,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:05:30,332 INFO L933 BasicCegarLoop]: 1374 mSDtfsCounter, 1305 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:30,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 4103 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:05:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71639 states. [2021-11-19 14:05:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71639 to 71639. [2021-11-19 14:05:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71639 states, 51877 states have (on average 1.2413979220078262) internal successors, (64400), 53287 states have internal predecessors, (64400), 15377 states have call successors, (15377), 4531 states have call predecessors, (15377), 4382 states have return successors, (16819), 14560 states have call predecessors, (16819), 15373 states have call successors, (16819) [2021-11-19 14:05:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71639 states to 71639 states and 96596 transitions. [2021-11-19 14:05:34,905 INFO L78 Accepts]: Start accepts. Automaton has 71639 states and 96596 transitions. Word has length 214 [2021-11-19 14:05:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:34,906 INFO L470 AbstractCegarLoop]: Abstraction has 71639 states and 96596 transitions. [2021-11-19 14:05:34,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:05:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 71639 states and 96596 transitions. [2021-11-19 14:05:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-19 14:05:34,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:34,915 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:34,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:35,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:35,128 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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 14:05:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:35,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1427327305, now seen corresponding path program 1 times [2021-11-19 14:05:35,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:35,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020825692] [2021-11-19 14:05:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:35,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:35,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:35,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:35,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:05:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:35,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:05:35,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2021-11-19 14:05:38,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2021-11-19 14:05:39,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:39,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020825692] [2021-11-19 14:05:39,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020825692] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:05:39,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:05:39,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:05:39,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96825835] [2021-11-19 14:05:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:39,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:05:39,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:05:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:05:39,944 INFO L87 Difference]: Start difference. First operand 71639 states and 96596 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:05:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:43,246 INFO L93 Difference]: Finished difference Result 71645 states and 96601 transitions. [2021-11-19 14:05:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:05:43,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 219 [2021-11-19 14:05:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:43,649 INFO L225 Difference]: With dead ends: 71645 [2021-11-19 14:05:43,649 INFO L226 Difference]: Without dead ends: 71643 [2021-11-19 14:05:43,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:05:43,853 INFO L933 BasicCegarLoop]: 1374 mSDtfsCounter, 1305 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:43,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 4103 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:05:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71643 states. [2021-11-19 14:05:47,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71643 to 71643. [2021-11-19 14:05:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71643 states, 51880 states have (on average 1.2413839629915189) internal successors, (64403), 53290 states have internal predecessors, (64403), 15377 states have call successors, (15377), 4532 states have call predecessors, (15377), 4383 states have return successors, (16819), 14560 states have call predecessors, (16819), 15373 states have call successors, (16819) [2021-11-19 14:05:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71643 states to 71643 states and 96599 transitions. [2021-11-19 14:05:48,254 INFO L78 Accepts]: Start accepts. Automaton has 71643 states and 96599 transitions. Word has length 219 [2021-11-19 14:05:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:48,255 INFO L470 AbstractCegarLoop]: Abstraction has 71643 states and 96599 transitions. [2021-11-19 14:05:48,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:05:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 71643 states and 96599 transitions. [2021-11-19 14:05:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-19 14:05:48,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:48,263 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 5, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:48,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:48,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:48,466 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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 14:05:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1436813719, now seen corresponding path program 1 times [2021-11-19 14:05:48,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:48,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346980684] [2021-11-19 14:05:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:48,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:48,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:48,477 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:48,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa3fac-f562-46f9-9aed-a6278d39322b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:05:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:49,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:05:49,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-19 14:05:49,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-11-19 14:05:50,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:50,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346980684] [2021-11-19 14:05:50,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346980684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:50,382 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:50,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:05:50,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102185763] [2021-11-19 14:05:50,382 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:50,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:05:50,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:50,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:05:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:05:50,384 INFO L87 Difference]: Start difference. First operand 71643 states and 96599 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 14:06:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:01,164 INFO L93 Difference]: Finished difference Result 190065 states and 256249 transitions. [2021-11-19 14:06:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:06:01,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 234 [2021-11-19 14:06:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:01,867 INFO L225 Difference]: With dead ends: 190065 [2021-11-19 14:06:01,867 INFO L226 Difference]: Without dead ends: 119780 [2021-11-19 14:06:02,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:06:02,053 INFO L933 BasicCegarLoop]: 2734 mSDtfsCounter, 2554 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:02,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2554 Valid, 4899 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-19 14:06:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119780 states.