./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-mutex_drivers-media-rc-imon.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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/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 22e4387c36ff25592bf6c6537ff8412eacb18bdab6752c222fa8ef2a1ca9dbb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:39:11,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:39:11,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:39:11,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:39:11,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:39:11,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:39:11,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:39:11,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:39:11,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:39:11,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:39:11,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:39:11,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:39:11,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:39:11,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:39:11,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:39:11,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:39:11,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:39:11,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:39:11,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:39:11,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:39:11,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:39:11,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:39:11,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:39:11,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:39:11,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:39:11,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:39:11,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:39:11,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:39:11,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:39:11,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:39:11,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:39:11,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:39:11,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:39:11,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:39:11,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:39:11,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:39:11,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:39:11,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:39:11,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:39:11,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:39:11,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:39:11,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:39:11,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:39:11,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:39:11,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:39:11,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:39:11,785 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:39:11,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:39:11,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:39:11,786 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:39:11,786 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:39:11,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:39:11,786 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:39:11,787 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:39:11,787 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:39:11,787 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:39:11,788 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:39:11,788 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:39:11,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:39:11,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:39:11,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:39:11,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:39:11,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:39:11,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:39:11,791 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:39:11,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:39:11,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:39:11,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:39:11,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:39:11,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:39:11,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:39:11,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:39:11,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:39:11,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:39:11,793 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:39:11,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:39:11,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:39:11,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:39:11,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:39:11,795 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e4387c36ff25592bf6c6537ff8412eacb18bdab6752c222fa8ef2a1ca9dbb8 [2021-11-19 14:39:12,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:39:12,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:39:12,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:39:12,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:39:12,100 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:39:12,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2021-11-19 14:39:12,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data/8ff0127a9/c1fb443015fa454e8ac2cb24e339afdd/FLAGe839b558e [2021-11-19 14:39:13,210 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:39:13,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2021-11-19 14:39:13,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data/8ff0127a9/c1fb443015fa454e8ac2cb24e339afdd/FLAGe839b558e [2021-11-19 14:39:13,553 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data/8ff0127a9/c1fb443015fa454e8ac2cb24e339afdd [2021-11-19 14:39:13,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:39:13,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:39:13,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:39:13,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:39:13,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:39:13,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:39:13" (1/1) ... [2021-11-19 14:39:13,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582b40ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:13, skipping insertion in model container [2021-11-19 14:39:13,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:39:13" (1/1) ... [2021-11-19 14:39:13,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:39:13,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:39:15,376 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 14:39:15,393 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 14:39:15,424 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 14:39:15,523 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 14:39:15,543 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 14:39:15,551 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 14:39:15,562 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 14:39:15,581 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 14:39:15,614 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 14:39:15,641 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 14:39:15,654 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 14:39:15,753 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 14:39:15,763 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 14:39:15,784 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 14:39:15,785 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 14:39:15,809 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 14:39:15,811 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 14:39:15,898 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 14:39:15,932 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 14:39:15,939 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 14:39:15,954 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 14:39:15,956 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 14:39:16,254 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 14:39:16,255 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 14:39:16,257 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 14:39:16,260 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 14:39:16,260 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 14:39:16,261 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 14:39:16,335 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 14:39:16,335 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 14:39:16,336 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 14:39:16,337 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 14:39:16,353 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 14:39:16,362 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 14:39:16,623 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284136,284149] [2021-11-19 14:39:16,626 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284302,284315] [2021-11-19 14:39:16,626 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284466,284479] [2021-11-19 14:39:16,627 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284631,284644] [2021-11-19 14:39:16,651 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:39:16,705 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 14:39:16,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@438b949e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:16, skipping insertion in model container [2021-11-19 14:39:16,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:39:16,706 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:39:16,709 INFO L158 Benchmark]: Toolchain (without parser) took 3150.07ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 51.1MB in the beginning and 58.6MB in the end (delta: -7.5MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2021-11-19 14:39:16,710 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:39:16,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3146.28ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 50.9MB in the beginning and 58.6MB in the end (delta: -7.7MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2021-11-19 14:39:16,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3146.28ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 50.9MB in the beginning and 58.6MB in the end (delta: -7.7MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4084]: 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/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 22e4387c36ff25592bf6c6537ff8412eacb18bdab6752c222fa8ef2a1ca9dbb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:39:19,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:39:19,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:39:19,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:39:19,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:39:19,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:39:19,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:39:19,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:39:19,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:39:19,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:39:19,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:39:19,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:39:19,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:39:19,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:39:19,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:39:19,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:39:19,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:39:19,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:39:19,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:39:19,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:39:19,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:39:19,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:39:19,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:39:19,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:39:19,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:39:19,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:39:19,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:39:19,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:39:19,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:39:19,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:39:19,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:39:19,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:39:19,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:39:19,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:39:19,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:39:19,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:39:19,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:39:19,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:39:19,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:39:19,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:39:19,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:39:19,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:39:19,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:39:19,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:39:19,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:39:19,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:39:19,394 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:39:19,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:39:19,394 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:39:19,395 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:39:19,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:39:19,395 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:39:19,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:39:19,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:39:19,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:39:19,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:39:19,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:39:19,397 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:39:19,397 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:39:19,398 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:39:19,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:39:19,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:39:19,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:39:19,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:39:19,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:39:19,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:39:19,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:39:19,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:39:19,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:39:19,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:39:19,400 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:39:19,401 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:39:19,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:39:19,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:39:19,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:39:19,402 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e4387c36ff25592bf6c6537ff8412eacb18bdab6752c222fa8ef2a1ca9dbb8 [2021-11-19 14:39:19,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:39:19,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:39:19,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:39:19,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:39:19,847 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:39:19,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2021-11-19 14:39:19,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data/9b5dcb2e4/09c96d36d25141b0a52d116d4da42055/FLAGf68be3dfe [2021-11-19 14:39:20,948 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:39:20,950 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2021-11-19 14:39:21,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data/9b5dcb2e4/09c96d36d25141b0a52d116d4da42055/FLAGf68be3dfe [2021-11-19 14:39:21,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/data/9b5dcb2e4/09c96d36d25141b0a52d116d4da42055 [2021-11-19 14:39:21,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:39:21,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:39:21,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:39:21,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:39:21,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:39:21,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:39:21" (1/1) ... [2021-11-19 14:39:21,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f24f31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:21, skipping insertion in model container [2021-11-19 14:39:21,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:39:21" (1/1) ... [2021-11-19 14:39:21,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:39:21,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:39:24,326 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284136,284149] [2021-11-19 14:39:24,329 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284302,284315] [2021-11-19 14:39:24,330 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284466,284479] [2021-11-19 14:39:24,331 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284631,284644] [2021-11-19 14:39:24,347 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:39:24,394 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:39:24,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:39:24,965 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284136,284149] [2021-11-19 14:39:24,965 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284302,284315] [2021-11-19 14:39:24,966 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284466,284479] [2021-11-19 14:39:24,966 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284631,284644] [2021-11-19 14:39:24,972 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:39:25,013 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:39:25,387 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284136,284149] [2021-11-19 14:39:25,387 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284302,284315] [2021-11-19 14:39:25,388 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284466,284479] [2021-11-19 14:39:25,389 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_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284631,284644] [2021-11-19 14:39:25,400 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:39:25,574 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:39:25,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25 WrapperNode [2021-11-19 14:39:25,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:39:25,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:39:25,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:39:25,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:39:25,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:25,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:25,963 INFO L137 Inliner]: procedures = 358, calls = 2811, calls flagged for inlining = 190, calls inlined = 160, statements flattened = 4705 [2021-11-19 14:39:25,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:39:25,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:39:25,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:39:25,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:39:25,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:25,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:26,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:26,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:26,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:26,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:26,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:26,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:39:26,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:39:26,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:39:26,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:39:26,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (1/1) ... [2021-11-19 14:39:26,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:39:26,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:39:26,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:39:26,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:39:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:39:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-19 14:39:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-19 14:39:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-19 14:39:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-19 14:39:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-19 14:39:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-19 14:39:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:39:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-19 14:39:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:39:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:39:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:39:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:39:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:39:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:39:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:39:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:39:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2021-11-19 14:39:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2021-11-19 14:39:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-19 14:39:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-19 14:39:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-11-19 14:39:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-11-19 14:39:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:39:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:39:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2021-11-19 14:39:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2021-11-19 14:39:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-11-19 14:39:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-11-19 14:39:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2021-11-19 14:39:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2021-11-19 14:39:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-11-19 14:39:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-11-19 14:39:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2021-11-19 14:39:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2021-11-19 14:39:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2021-11-19 14:39:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2021-11-19 14:39:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-19 14:39:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-19 14:39:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:39:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:39:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2021-11-19 14:39:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2021-11-19 14:39:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:39:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-11-19 14:39:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-11-19 14:39:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:39:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:39:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:39:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:39:26,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:39:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-19 14:39:26,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-19 14:39:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2021-11-19 14:39:26,447 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2021-11-19 14:39:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:39:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:39:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:39:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:39:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:39:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:39:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2021-11-19 14:39:26,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2021-11-19 14:39:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:39:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:39:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:39:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:39:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2021-11-19 14:39:26,448 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2021-11-19 14:39:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 14:39:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 14:39:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-19 14:39:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-19 14:39:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:39:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:39:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2021-11-19 14:39:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2021-11-19 14:39:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-11-19 14:39:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-11-19 14:39:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-19 14:39:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-19 14:39:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 14:39:26,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 14:39:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-19 14:39:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-19 14:39:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-11-19 14:39:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-11-19 14:39:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:39:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:39:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2021-11-19 14:39:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2021-11-19 14:39:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-11-19 14:39:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-11-19 14:39:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-19 14:39:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-19 14:39:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-19 14:39:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-19 14:39:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:39:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:39:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-19 14:39:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-19 14:39:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:39:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:39:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:39:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:39:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:39:26,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:39:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-19 14:39:26,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-19 14:39:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-19 14:39:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-19 14:39:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:39:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:39:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-19 14:39:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-19 14:39:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2021-11-19 14:39:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2021-11-19 14:39:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-11-19 14:39:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-11-19 14:39:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:39:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:39:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2021-11-19 14:39:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2021-11-19 14:39:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:39:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:39:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:39:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:39:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:39:26,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:39:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:39:26,472 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2021-11-19 14:39:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2021-11-19 14:39:26,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2021-11-19 14:39:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2021-11-19 14:39:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-19 14:39:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-19 14:39:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:39:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:39:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:39:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:39:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-11-19 14:39:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-11-19 14:39:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 14:39:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:39:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:39:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2021-11-19 14:39:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2021-11-19 14:39:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:39:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-11-19 14:39:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-11-19 14:39:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2021-11-19 14:39:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2021-11-19 14:39:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-19 14:39:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-19 14:39:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:39:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:39:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2021-11-19 14:39:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2021-11-19 14:39:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-11-19 14:39:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-11-19 14:39:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2021-11-19 14:39:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2021-11-19 14:39:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2021-11-19 14:39:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2021-11-19 14:39:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:39:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-19 14:39:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-19 14:39:26,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:39:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:39:26,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:39:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:39:27,346 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:39:27,351 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:39:27,495 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:40:42,748 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:40:42,804 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:40:42,822 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:40:42,822 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 14:40:42,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:40:42 BoogieIcfgContainer [2021-11-19 14:40:42,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:40:42,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:40:42,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:40:42,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:40:42,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:39:21" (1/3) ... [2021-11-19 14:40:42,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10187497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:40:42, skipping insertion in model container [2021-11-19 14:40:42,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:39:25" (2/3) ... [2021-11-19 14:40:42,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10187497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:40:42, skipping insertion in model container [2021-11-19 14:40:42,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:40:42" (3/3) ... [2021-11-19 14:40:42,834 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2021-11-19 14:40:42,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:40:42,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:40:42,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:40:42,903 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 14:40:42,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:40:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 1388 states, 968 states have (on average 1.2954545454545454) internal successors, (1254), 977 states have internal predecessors, (1254), 350 states have call successors, (350), 69 states have call predecessors, (350), 68 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) [2021-11-19 14:40:42,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-19 14:40:42,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:40:42,982 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:42,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:40:42,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:40:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1348257107, now seen corresponding path program 1 times [2021-11-19 14:40:43,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:40:43,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766479960] [2021-11-19 14:40:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:40:43,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:40:43,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:40:43,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:40:43,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:40:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:40:46,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:40:46,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:40:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-19 14:40:47,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:40:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-19 14:40:47,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:40:47,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766479960] [2021-11-19 14:40:47,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766479960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:40:47,723 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:40:47,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:40:47,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364319236] [2021-11-19 14:40:47,726 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:40:47,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:40:47,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:40:47,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:40:47,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:40:47,774 INFO L87 Difference]: Start difference. First operand has 1388 states, 968 states have (on average 1.2954545454545454) internal successors, (1254), 977 states have internal predecessors, (1254), 350 states have call successors, (350), 69 states have call predecessors, (350), 68 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:40:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:40:54,413 INFO L93 Difference]: Finished difference Result 5184 states and 7428 transitions. [2021-11-19 14:40:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:40:54,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 234 [2021-11-19 14:40:54,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:40:54,486 INFO L225 Difference]: With dead ends: 5184 [2021-11-19 14:40:54,487 INFO L226 Difference]: Without dead ends: 3814 [2021-11-19 14:40:54,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:40:54,516 INFO L933 BasicCegarLoop]: 2501 mSDtfsCounter, 4686 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 5388 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:40:54,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 5388 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-19 14:40:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2021-11-19 14:40:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3774. [2021-11-19 14:40:54,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 2665 states have (on average 1.2851782363977486) internal successors, (3425), 2701 states have internal predecessors, (3425), 907 states have call successors, (907), 200 states have call predecessors, (907), 199 states have return successors, (903), 890 states have call predecessors, (903), 903 states have call successors, (903) [2021-11-19 14:40:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 5235 transitions. [2021-11-19 14:40:54,949 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 5235 transitions. Word has length 234 [2021-11-19 14:40:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:40:54,951 INFO L470 AbstractCegarLoop]: Abstraction has 3774 states and 5235 transitions. [2021-11-19 14:40:54,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:40:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 5235 transitions. [2021-11-19 14:40:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-19 14:40:54,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:40:54,957 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:55,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:40:55,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:40:55,158 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:40:55,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:40:55,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1272391740, now seen corresponding path program 1 times [2021-11-19 14:40:55,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:40:55,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176335733] [2021-11-19 14:40:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:40:55,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:40:55,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:40:55,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:40:55,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:40:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:40:58,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:40:58,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:40:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-19 14:40:58,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:40:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-19 14:40:59,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:40:59,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176335733] [2021-11-19 14:40:59,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176335733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:40:59,460 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:40:59,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:40:59,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360016522] [2021-11-19 14:40:59,461 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:40:59,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:40:59,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:40:59,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:40:59,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:40:59,466 INFO L87 Difference]: Start difference. First operand 3774 states and 5235 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:41:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:41:06,070 INFO L93 Difference]: Finished difference Result 14026 states and 19374 transitions. [2021-11-19 14:41:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:41:06,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 235 [2021-11-19 14:41:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:41:06,163 INFO L225 Difference]: With dead ends: 14026 [2021-11-19 14:41:06,164 INFO L226 Difference]: Without dead ends: 10295 [2021-11-19 14:41:06,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:06,183 INFO L933 BasicCegarLoop]: 2566 mSDtfsCounter, 4539 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4539 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:41:06,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4539 Valid, 5413 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-19 14:41:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10295 states. [2021-11-19 14:41:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10295 to 10251. [2021-11-19 14:41:06,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10251 states, 7282 states have (on average 1.2813787421038176) internal successors, (9331), 7390 states have internal predecessors, (9331), 2399 states have call successors, (2399), 568 states have call predecessors, (2399), 567 states have return successors, (2395), 2346 states have call predecessors, (2395), 2395 states have call successors, (2395) [2021-11-19 14:41:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10251 states to 10251 states and 14125 transitions. [2021-11-19 14:41:06,765 INFO L78 Accepts]: Start accepts. Automaton has 10251 states and 14125 transitions. Word has length 235 [2021-11-19 14:41:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:41:06,769 INFO L470 AbstractCegarLoop]: Abstraction has 10251 states and 14125 transitions. [2021-11-19 14:41:06,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:41:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 10251 states and 14125 transitions. [2021-11-19 14:41:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-19 14:41:06,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:41:06,777 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:06,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:41:06,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:41:06,990 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:41:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:41:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1872398824, now seen corresponding path program 1 times [2021-11-19 14:41:06,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:41:06,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595381579] [2021-11-19 14:41:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:06,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:41:06,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:41:06,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:41:07,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:41:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:41:09,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:41:09,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:41:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-19 14:41:10,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:41:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-19 14:41:11,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:41:11,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595381579] [2021-11-19 14:41:11,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595381579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:41:11,159 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:41:11,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:41:11,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284018557] [2021-11-19 14:41:11,162 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:41:11,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:41:11,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:41:11,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:41:11,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:11,165 INFO L87 Difference]: Start difference. First operand 10251 states and 14125 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:41:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:41:17,456 INFO L93 Difference]: Finished difference Result 31206 states and 42928 transitions. [2021-11-19 14:41:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:41:17,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 239 [2021-11-19 14:41:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:41:17,607 INFO L225 Difference]: With dead ends: 31206 [2021-11-19 14:41:17,607 INFO L226 Difference]: Without dead ends: 20998 [2021-11-19 14:41:17,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:17,723 INFO L933 BasicCegarLoop]: 2433 mSDtfsCounter, 4063 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4063 SdHoareTripleChecker+Valid, 5349 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:41:17,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4063 Valid, 5349 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-19 14:41:17,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20998 states. [2021-11-19 14:41:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20998 to 20979. [2021-11-19 14:41:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20979 states, 14948 states have (on average 1.2837168852020338) internal successors, (19189), 15126 states have internal predecessors, (19189), 4822 states have call successors, (4822), 1207 states have call predecessors, (4822), 1206 states have return successors, (4818), 4759 states have call predecessors, (4818), 4818 states have call successors, (4818) [2021-11-19 14:41:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20979 states to 20979 states and 28829 transitions. [2021-11-19 14:41:19,236 INFO L78 Accepts]: Start accepts. Automaton has 20979 states and 28829 transitions. Word has length 239 [2021-11-19 14:41:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:41:19,240 INFO L470 AbstractCegarLoop]: Abstraction has 20979 states and 28829 transitions. [2021-11-19 14:41:19,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:41:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 20979 states and 28829 transitions. [2021-11-19 14:41:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-19 14:41:19,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:41:19,247 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:19,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:41:19,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:41:19,462 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:41:19,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:41:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1542531151, now seen corresponding path program 1 times [2021-11-19 14:41:19,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:41:19,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191206156] [2021-11-19 14:41:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:19,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:41:19,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:41:19,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:41:19,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:41:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:41:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:41:22,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:41:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-19 14:41:23,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:41:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-19 14:41:23,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:41:23,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191206156] [2021-11-19 14:41:23,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191206156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:41:23,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:41:23,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:41:23,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434490479] [2021-11-19 14:41:23,683 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:41:23,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:41:23,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:41:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:41:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:23,685 INFO L87 Difference]: Start difference. First operand 20979 states and 28829 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:41:30,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:41:30,408 INFO L93 Difference]: Finished difference Result 79540 states and 109117 transitions. [2021-11-19 14:41:30,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:41:30,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 243 [2021-11-19 14:41:30,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:41:30,857 INFO L225 Difference]: With dead ends: 79540 [2021-11-19 14:41:30,858 INFO L226 Difference]: Without dead ends: 58604 [2021-11-19 14:41:30,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:30,937 INFO L933 BasicCegarLoop]: 2508 mSDtfsCounter, 4697 mSDsluCounter, 2944 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4697 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:41:30,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4697 Valid, 5452 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 14:41:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58604 states. [2021-11-19 14:41:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58604 to 58532. [2021-11-19 14:41:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58532 states, 41740 states have (on average 1.2823909918543364) internal successors, (53527), 42292 states have internal predecessors, (53527), 13320 states have call successors, (13320), 3470 states have call predecessors, (13320), 3469 states have return successors, (13316), 13099 states have call predecessors, (13316), 13316 states have call successors, (13316) [2021-11-19 14:41:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58532 states to 58532 states and 80163 transitions. [2021-11-19 14:41:34,557 INFO L78 Accepts]: Start accepts. Automaton has 58532 states and 80163 transitions. Word has length 243 [2021-11-19 14:41:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:41:34,559 INFO L470 AbstractCegarLoop]: Abstraction has 58532 states and 80163 transitions. [2021-11-19 14:41:34,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:41:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 58532 states and 80163 transitions. [2021-11-19 14:41:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-19 14:41:34,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:41:34,564 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:34,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:41:34,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:41:34,784 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:41:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:41:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash 455657444, now seen corresponding path program 1 times [2021-11-19 14:41:34,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:41:34,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598155031] [2021-11-19 14:41:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:34,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:41:34,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:41:34,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:41:34,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:41:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:41:38,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:41:38,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:41:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-19 14:41:38,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:41:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-19 14:41:39,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:41:39,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598155031] [2021-11-19 14:41:39,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598155031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:41:39,416 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:41:39,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:41:39,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598640267] [2021-11-19 14:41:39,416 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:41:39,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:41:39,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:41:39,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:41:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:39,418 INFO L87 Difference]: Start difference. First operand 58532 states and 80163 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, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:41:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:41:47,941 INFO L93 Difference]: Finished difference Result 177128 states and 240942 transitions. [2021-11-19 14:41:47,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:41:47,943 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, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 245 [2021-11-19 14:41:47,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:41:48,688 INFO L225 Difference]: With dead ends: 177128 [2021-11-19 14:41:48,689 INFO L226 Difference]: Without dead ends: 118639 [2021-11-19 14:41:48,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:48,861 INFO L933 BasicCegarLoop]: 2421 mSDtfsCounter, 3554 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:41:48,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3554 Valid, 4784 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 14:41:49,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118639 states. [2021-11-19 14:41:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118639 to 118383. [2021-11-19 14:41:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118383 states, 85317 states have (on average 1.279709788201648) internal successors, (109181), 86529 states have internal predecessors, (109181), 25373 states have call successors, (25373), 7691 states have call predecessors, (25373), 7690 states have return successors, (25369), 24547 states have call predecessors, (25369), 25369 states have call successors, (25369) [2021-11-19 14:41:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118383 states to 118383 states and 159923 transitions. [2021-11-19 14:41:55,541 INFO L78 Accepts]: Start accepts. Automaton has 118383 states and 159923 transitions. Word has length 245 [2021-11-19 14:41:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:41:55,542 INFO L470 AbstractCegarLoop]: Abstraction has 118383 states and 159923 transitions. [2021-11-19 14:41:55,543 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, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:41:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 118383 states and 159923 transitions. [2021-11-19 14:41:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-19 14:41:55,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:41:55,547 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:55,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:41:55,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:41:55,762 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:41:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:41:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash -761189406, now seen corresponding path program 1 times [2021-11-19 14:41:55,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:41:55,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246132166] [2021-11-19 14:41:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:41:55,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:41:55,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:41:55,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:41:55,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f4fbe9-7e93-4fd2-9870-398b41eb67a3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:41:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:41:58,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:41:58,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:41:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-19 14:41:59,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:41:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-19 14:41:59,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:41:59,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246132166] [2021-11-19 14:41:59,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246132166] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:41:59,809 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:41:59,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:41:59,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56247153] [2021-11-19 14:41:59,809 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:41:59,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:41:59,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:41:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:41:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:41:59,810 INFO L87 Difference]: Start difference. First operand 118383 states and 159923 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 14:42:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:14,996 INFO L93 Difference]: Finished difference Result 437350 states and 587035 transitions. [2021-11-19 14:42:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:42:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 244 [2021-11-19 14:42:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:16,470 INFO L225 Difference]: With dead ends: 437350 [2021-11-19 14:42:16,470 INFO L226 Difference]: Without dead ends: 319010 [2021-11-19 14:42:17,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:42:17,151 INFO L933 BasicCegarLoop]: 2659 mSDtfsCounter, 3556 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3556 SdHoareTripleChecker+Valid, 5992 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:17,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3556 Valid, 5992 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-19 14:42:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319010 states.