./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI --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 4c72fad0f4736d2d4eb53bca18880400af0864c4b127cd0e90e1329def3f1884 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:19:20,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:19:20,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:19:20,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:19:20,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:19:20,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:19:20,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:19:20,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:19:20,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:19:20,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:19:20,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:19:20,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:19:20,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:19:20,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:19:20,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:19:20,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:19:20,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:19:20,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:19:20,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:19:20,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:19:20,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:19:20,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:19:20,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:19:20,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:19:20,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:19:20,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:19:20,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:19:20,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:19:20,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:19:20,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:19:20,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:19:20,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:19:20,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:19:20,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:19:20,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:19:20,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:19:20,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:19:20,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:19:20,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:19:20,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:19:20,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:19:20,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:19:20,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:19:20,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:19:20,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:19:20,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:19:20,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:19:20,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:19:20,384 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:19:20,385 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:19:20,385 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:19:20,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:19:20,386 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:19:20,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:19:20,387 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:19:20,387 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:19:20,387 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:19:20,387 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:19:20,388 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:19:20,388 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:19:20,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:19:20,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:19:20,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:19:20,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:19:20,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:19:20,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:19:20,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:19:20,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:19:20,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:19:20,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:19:20,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:19:20,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:19:20,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:19:20,393 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:19:20,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:19:20,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:19:20,394 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:19:20,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:19:20,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:19:20,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:19:20,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c72fad0f4736d2d4eb53bca18880400af0864c4b127cd0e90e1329def3f1884 [2022-11-03 02:19:20,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:19:20,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:19:20,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:19:20,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:19:20,690 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:19:20,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i [2022-11-03 02:19:20,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/data/97f1e427c/392fa338d9c8494c9fe6b1034b0728a1/FLAGce8d2dc14 [2022-11-03 02:19:21,622 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:19:21,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i [2022-11-03 02:19:21,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/data/97f1e427c/392fa338d9c8494c9fe6b1034b0728a1/FLAGce8d2dc14 [2022-11-03 02:19:22,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/data/97f1e427c/392fa338d9c8494c9fe6b1034b0728a1 [2022-11-03 02:19:22,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:19:22,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:19:22,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:19:22,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:19:22,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:19:22,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:19:22" (1/1) ... [2022-11-03 02:19:22,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77438350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:22, skipping insertion in model container [2022-11-03 02:19:22,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:19:22" (1/1) ... [2022-11-03 02:19:22,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:19:22,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:19:25,070 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_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[379788,379801] [2022-11-03 02:19:25,073 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_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[379954,379967] [2022-11-03 02:19:25,074 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_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[380118,380131] [2022-11-03 02:19:25,075 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_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[380283,380296] [2022-11-03 02:19:25,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:19:25,178 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:19:25,611 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_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[379788,379801] [2022-11-03 02:19:25,612 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_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[379954,379967] [2022-11-03 02:19:25,612 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_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[380118,380131] [2022-11-03 02:19:25,613 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_929a8b42-e9f8-491a-92e4-4d129083db77/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[380283,380296] [2022-11-03 02:19:25,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:19:25,766 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:19:25,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25 WrapperNode [2022-11-03 02:19:25,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:19:25,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:19:25,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:19:25,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:19:25,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:25,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,131 INFO L138 Inliner]: procedures = 413, calls = 2523, calls flagged for inlining = 243, calls inlined = 230, statements flattened = 7164 [2022-11-03 02:19:26,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:19:26,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:19:26,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:19:26,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:19:26,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,508 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:19:26,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:19:26,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:19:26,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:19:26,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (1/1) ... [2022-11-03 02:19:26,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:19:26,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:26,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:19:26,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929a8b42-e9f8-491a-92e4-4d129083db77/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:19:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_has_diversity [2022-11-03 02:19:26,665 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_has_diversity [2022-11-03 02:19:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:19:26,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:19:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_acf_status [2022-11-03 02:19:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:19:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:19:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_ctrl [2022-11-03 02:19:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_ctrl [2022-11-03 02:19:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:19:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:19:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_probe [2022-11-03 02:19:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_probe [2022-11-03 02:19:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_am_acf_status [2022-11-03 02:19:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_phase_div_status [2022-11-03 02:19:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:19:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:19:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-03 02:19:26,668 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-03 02:19:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:19:26,668 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:19:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_lock [2022-11-03 02:19:26,669 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_lock [2022-11-03 02:19:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:19:26,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:19:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 02:19:26,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 02:19:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_acf_blob [2022-11-03 02:19:26,670 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_acf_blob [2022-11-03 02:19:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:19:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_rsq_status [2022-11-03 02:19:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:19:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-03 02:19:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-03 02:19:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:19:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:19:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:19:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_remove [2022-11-03 02:19:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_remove [2022-11-03 02:19:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:19:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:19:26,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:19:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:19:26,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:19:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-03 02:19:26,674 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-03 02:19:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_has_am [2022-11-03 02:19:26,675 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_has_am [2022-11-03 02:19:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_fops_read [2022-11-03 02:19:26,675 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_fops_read [2022-11-03 02:19:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2022-11-03 02:19:26,676 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2022-11-03 02:19:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_tuner [2022-11-03 02:19:26,676 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_tuner [2022-11-03 02:19:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_change_func [2022-11-03 02:19:26,676 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_change_func [2022-11-03 02:19:26,676 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_frequency [2022-11-03 02:19:26,677 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_frequency [2022-11-03 02:19:26,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:19:26,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:19:26,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:19:26,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:19:26,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:19:26,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:19:26,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:19:26,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_5 [2022-11-03 02:19:26,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_5 [2022-11-03 02:19:26,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-03 02:19:26,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-03 02:19:26,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_6 [2022-11-03 02:19:26,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_6 [2022-11-03 02:19:26,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:19:26,680 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_to_v4l2 [2022-11-03 02:19:26,680 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_to_v4l2 [2022-11-03 02:19:26,680 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_querycap [2022-11-03 02:19:26,680 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_querycap [2022-11-03 02:19:26,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:19:26,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:19:26,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:19:26,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:19:26,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:19:26,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:19:26,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:19:26,683 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_register [2022-11-03 02:19:26,683 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_register [2022-11-03 02:19:26,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_lock_of_si476x_core [2022-11-03 02:19:26,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_lock_of_si476x_core [2022-11-03 02:19:26,684 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_am_seek_start [2022-11-03 02:19:26,684 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_agc_status [2022-11-03 02:19:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_g_frequency [2022-11-03 02:19:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_g_frequency [2022-11-03 02:19:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2022-11-03 02:19:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2022-11-03 02:19:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_fops_open [2022-11-03 02:19:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_fops_open [2022-11-03 02:19:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:19:26,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:19:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_add_new_custom [2022-11-03 02:19:26,686 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_add_new_custom [2022-11-03 02:19:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:19:26,687 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:19:26,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:19:26,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:19:26,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:19:26,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:19:26,692 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_am_tune_freq [2022-11-03 02:19:26,692 INFO L130 BoogieDeclarations]: Found specification of procedure regmap_read [2022-11-03 02:19:26,692 INFO L138 BoogieDeclarations]: Found implementation of procedure regmap_read [2022-11-03 02:19:26,692 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_is_in_am_receiver_mode [2022-11-03 02:19:26,693 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_is_in_am_receiver_mode [2022-11-03 02:19:26,693 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_to_radio [2022-11-03 02:19:26,694 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_to_radio [2022-11-03 02:19:26,694 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:19:26,694 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:19:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_rds_blckcnt_blob [2022-11-03 02:19:26,700 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_rds_blckcnt_blob [2022-11-03 02:19:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure regmap_update_bits [2022-11-03 02:19:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure regmap_update_bits [2022-11-03 02:19:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_enum_freq_bands [2022-11-03 02:19:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_enum_freq_bands [2022-11-03 02:19:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-03 02:19:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-03 02:19:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2022-11-03 02:19:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2022-11-03 02:19:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:19:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_rds_blockcount [2022-11-03 02:19:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_g_register [2022-11-03 02:19:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_g_register [2022-11-03 02:19:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:19:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_phase_diversity [2022-11-03 02:19:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_cmd_fm_phase_diversity [2022-11-03 02:19:26,703 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:19:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:19:26,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:19:26,703 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_to_si476x [2022-11-03 02:19:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_to_si476x [2022-11-03 02:19:26,703 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_do_post_powerup_init [2022-11-03 02:19:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_do_post_powerup_init [2022-11-03 02:19:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure regmap_write [2022-11-03 02:19:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure regmap_write [2022-11-03 02:19:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_seek_start [2022-11-03 02:19:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure simple_read_from_buffer [2022-11-03 02:19:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_read_from_buffer [2022-11-03 02:19:26,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:19:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:19:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release_empty [2022-11-03 02:19:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release_empty [2022-11-03 02:19:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_rsq_blob [2022-11-03 02:19:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_rsq_blob [2022-11-03 02:19:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_range_is_inside_of_the_band [2022-11-03 02:19:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_range_is_inside_of_the_band [2022-11-03 02:19:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 02:19:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 02:19:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_set_power_state [2022-11-03 02:19:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_set_power_state [2022-11-03 02:19:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure regcache_cache_only [2022-11-03 02:19:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure regcache_cache_only [2022-11-03 02:19:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 02:19:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 02:19:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-03 02:19:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-03 02:19:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_fops_release [2022-11-03 02:19:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_fops_release [2022-11-03 02:19:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:19:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_hw_freq_seek [2022-11-03 02:19:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_hw_freq_seek [2022-11-03 02:19:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_rsq_primary_blob [2022-11-03 02:19:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_rsq_primary_blob [2022-11-03 02:19:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_agc_blob [2022-11-03 02:19:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_agc_blob [2022-11-03 02:19:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:19:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:19:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std_menu [2022-11-03 02:19:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std_menu [2022-11-03 02:19:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_g_tuner [2022-11-03 02:19:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_g_tuner [2022-11-03 02:19:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_stop [2022-11-03 02:19:26,710 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_stop [2022-11-03 02:19:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_fops_poll [2022-11-03 02:19:26,711 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_fops_poll [2022-11-03 02:19:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_tune_freq [2022-11-03 02:19:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_si476x_radio_driver_exit_17_2 [2022-11-03 02:19:26,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_si476x_radio_driver_exit_17_2 [2022-11-03 02:19:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_is_a_secondary_tuner [2022-11-03 02:19:26,712 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_is_a_secondary_tuner [2022-11-03 02:19:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-03 02:19:26,712 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-03 02:19:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:19:26,713 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:19:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_fh_is_singular_file [2022-11-03 02:19:26,713 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_fh_is_singular_file [2022-11-03 02:19:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:19:26,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:19:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_unlock [2022-11-03 02:19:26,713 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_unlock [2022-11-03 02:19:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_fh_release [2022-11-03 02:19:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_fh_release [2022-11-03 02:19:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:19:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:19:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2022-11-03 02:19:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2022-11-03 02:19:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_g_volatile_ctrl [2022-11-03 02:19:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_g_volatile_ctrl [2022-11-03 02:19:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:19:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure regcache_sync_region [2022-11-03 02:19:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure regcache_sync_region [2022-11-03 02:19:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_am_rsq_status [2022-11-03 02:19:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:19:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:19:27,947 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:19:27,951 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:19:28,112 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:19:35,149 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:19:35,296 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:19:36,649 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:19:36,649 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:19:36,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:19:36 BoogieIcfgContainer [2022-11-03 02:19:36,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:19:36,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:19:36,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:19:36,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:19:36,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:19:22" (1/3) ... [2022-11-03 02:19:36,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e2d3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:19:36, skipping insertion in model container [2022-11-03 02:19:36,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:19:25" (2/3) ... [2022-11-03 02:19:36,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e2d3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:19:36, skipping insertion in model container [2022-11-03 02:19:36,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:19:36" (3/3) ... [2022-11-03 02:19:36,664 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i [2022-11-03 02:19:36,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:19:36,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:19:36,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:19:36,785 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@13f7ff00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:19:36,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:19:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 2089 states, 1292 states have (on average 1.3544891640866874) internal successors, (1750), 1295 states have internal predecessors, (1750), 704 states have call successors, (704), 91 states have call predecessors, (704), 90 states have return successors, (693), 693 states have call predecessors, (693), 693 states have call successors, (693) [2022-11-03 02:19:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-11-03 02:19:36,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:36,851 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:36,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === 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)] === [2022-11-03 02:19:36,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:36,857 INFO L85 PathProgramCache]: Analyzing trace with hash -783390908, now seen corresponding path program 1 times [2022-11-03 02:19:36,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:36,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575458745] [2022-11-03 02:19:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:36,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 19463 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19463 trivial. 0 not checked. [2022-11-03 02:19:38,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:38,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575458745] [2022-11-03 02:19:38,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575458745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:38,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:38,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:38,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680882675] [2022-11-03 02:19:38,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:38,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:38,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:38,814 INFO L87 Difference]: Start difference. First operand has 2089 states, 1292 states have (on average 1.3544891640866874) internal successors, (1750), 1295 states have internal predecessors, (1750), 704 states have call successors, (704), 91 states have call predecessors, (704), 90 states have return successors, (693), 693 states have call predecessors, (693), 693 states have call successors, (693) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2022-11-03 02:19:41,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:44,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:45,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:46,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:46,178 INFO L93 Difference]: Finished difference Result 5891 states and 9115 transitions. [2022-11-03 02:19:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:46,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 724 [2022-11-03 02:19:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:46,223 INFO L225 Difference]: With dead ends: 5891 [2022-11-03 02:19:46,223 INFO L226 Difference]: Without dead ends: 3928 [2022-11-03 02:19:46,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:46,244 INFO L413 NwaCegarLoop]: 3298 mSDtfsCounter, 2837 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:46,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 5958 Invalid, 907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 02:19:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2022-11-03 02:19:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3924. [2022-11-03 02:19:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3924 states, 2460 states have (on average 1.3565040650406504) internal successors, (3337), 2465 states have internal predecessors, (3337), 1285 states have call successors, (1285), 177 states have call predecessors, (1285), 176 states have return successors, (1281), 1281 states have call predecessors, (1281), 1281 states have call successors, (1281) [2022-11-03 02:19:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 5903 transitions. [2022-11-03 02:19:46,641 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 5903 transitions. Word has length 724 [2022-11-03 02:19:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:46,649 INFO L495 AbstractCegarLoop]: Abstraction has 3924 states and 5903 transitions. [2022-11-03 02:19:46,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2022-11-03 02:19:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 5903 transitions. [2022-11-03 02:19:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2022-11-03 02:19:46,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:46,681 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:46,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:19:46,682 INFO L420 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)] === [2022-11-03 02:19:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1044504585, now seen corresponding path program 1 times [2022-11-03 02:19:46,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:46,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220259425] [2022-11-03 02:19:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:46,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19460 trivial. 0 not checked. [2022-11-03 02:19:47,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:47,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220259425] [2022-11-03 02:19:47,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220259425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:47,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:47,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440772094] [2022-11-03 02:19:47,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:47,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:47,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:47,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:47,689 INFO L87 Difference]: Start difference. First operand 3924 states and 5903 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2022-11-03 02:19:49,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:51,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:54,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:54,820 INFO L93 Difference]: Finished difference Result 9605 states and 14450 transitions. [2022-11-03 02:19:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 732 [2022-11-03 02:19:54,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:54,861 INFO L225 Difference]: With dead ends: 9605 [2022-11-03 02:19:54,861 INFO L226 Difference]: Without dead ends: 5822 [2022-11-03 02:19:54,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:54,878 INFO L413 NwaCegarLoop]: 3299 mSDtfsCounter, 2851 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2851 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:54,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2851 Valid, 5965 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:19:54,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2022-11-03 02:19:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5802. [2022-11-03 02:19:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5802 states, 3643 states have (on average 1.3584957452648916) internal successors, (4949), 3653 states have internal predecessors, (4949), 1891 states have call successors, (1891), 266 states have call predecessors, (1891), 265 states have return successors, (1887), 1882 states have call predecessors, (1887), 1887 states have call successors, (1887) [2022-11-03 02:19:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 8727 transitions. [2022-11-03 02:19:55,201 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 8727 transitions. Word has length 732 [2022-11-03 02:19:55,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:55,206 INFO L495 AbstractCegarLoop]: Abstraction has 5802 states and 8727 transitions. [2022-11-03 02:19:55,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2022-11-03 02:19:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 8727 transitions. [2022-11-03 02:19:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2022-11-03 02:19:55,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:55,232 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:55,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:19:55,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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)] === [2022-11-03 02:19:55,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1336953691, now seen corresponding path program 1 times [2022-11-03 02:19:55,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:55,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143262649] [2022-11-03 02:19:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:55,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19460 trivial. 0 not checked. [2022-11-03 02:19:56,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:56,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143262649] [2022-11-03 02:19:56,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143262649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:56,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:56,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32351645] [2022-11-03 02:19:56,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:56,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:56,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:56,047 INFO L87 Difference]: Start difference. First operand 5802 states and 8727 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2022-11-03 02:19:58,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:00,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:02,848 INFO L93 Difference]: Finished difference Result 16532 states and 24888 transitions. [2022-11-03 02:20:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 741 [2022-11-03 02:20:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:02,921 INFO L225 Difference]: With dead ends: 16532 [2022-11-03 02:20:02,921 INFO L226 Difference]: Without dead ends: 10871 [2022-11-03 02:20:02,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:02,954 INFO L413 NwaCegarLoop]: 3377 mSDtfsCounter, 2670 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 5999 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:02,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 5999 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 971 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 02:20:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2022-11-03 02:20:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 10844. [2022-11-03 02:20:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10844 states, 6791 states have (on average 1.3512001178029744) internal successors, (9176), 6815 states have internal predecessors, (9176), 3541 states have call successors, (3541), 510 states have call predecessors, (3541), 509 states have return successors, (3543), 3518 states have call predecessors, (3543), 3537 states have call successors, (3543) [2022-11-03 02:20:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10844 states to 10844 states and 16260 transitions. [2022-11-03 02:20:03,863 INFO L78 Accepts]: Start accepts. Automaton has 10844 states and 16260 transitions. Word has length 741 [2022-11-03 02:20:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:03,865 INFO L495 AbstractCegarLoop]: Abstraction has 10844 states and 16260 transitions. [2022-11-03 02:20:03,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2022-11-03 02:20:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 10844 states and 16260 transitions. [2022-11-03 02:20:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2022-11-03 02:20:03,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:03,895 INFO L195 NwaCegarLoop]: trace histogram [72, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:03,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:20:03,896 INFO L420 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)] === [2022-11-03 02:20:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash -920292249, now seen corresponding path program 1 times [2022-11-03 02:20:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:03,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285296063] [2022-11-03 02:20:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20022 trivial. 0 not checked. [2022-11-03 02:20:04,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:04,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285296063] [2022-11-03 02:20:04,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285296063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:04,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:04,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:04,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385500174] [2022-11-03 02:20:04,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:04,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:04,672 INFO L87 Difference]: Start difference. First operand 10844 states and 16260 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2022-11-03 02:20:08,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:10,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:12,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:14,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:16,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:16,966 INFO L93 Difference]: Finished difference Result 28478 states and 42654 transitions. [2022-11-03 02:20:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 751 [2022-11-03 02:20:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:17,084 INFO L225 Difference]: With dead ends: 28478 [2022-11-03 02:20:17,084 INFO L226 Difference]: Without dead ends: 17775 [2022-11-03 02:20:17,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:17,144 INFO L413 NwaCegarLoop]: 3485 mSDtfsCounter, 2779 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:17,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2779 Valid, 6140 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 905 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-11-03 02:20:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17775 states. [2022-11-03 02:20:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17775 to 17749. [2022-11-03 02:20:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17749 states, 11091 states have (on average 1.3473086286177982) internal successors, (14943), 11143 states have internal predecessors, (14943), 5801 states have call successors, (5801), 855 states have call predecessors, (5801), 854 states have return successors, (5804), 5750 states have call predecessors, (5804), 5797 states have call successors, (5804) [2022-11-03 02:20:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17749 states to 17749 states and 26548 transitions. [2022-11-03 02:20:18,437 INFO L78 Accepts]: Start accepts. Automaton has 17749 states and 26548 transitions. Word has length 751 [2022-11-03 02:20:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:18,438 INFO L495 AbstractCegarLoop]: Abstraction has 17749 states and 26548 transitions. [2022-11-03 02:20:18,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2022-11-03 02:20:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 17749 states and 26548 transitions. [2022-11-03 02:20:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2022-11-03 02:20:18,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:18,453 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:18,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:20:18,454 INFO L420 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)] === [2022-11-03 02:20:18,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash 933432000, now seen corresponding path program 1 times [2022-11-03 02:20:18,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:18,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551000907] [2022-11-03 02:20:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:18,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 19487 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19487 trivial. 0 not checked. [2022-11-03 02:20:19,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:19,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551000907] [2022-11-03 02:20:19,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551000907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:19,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:19,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:19,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180427368] [2022-11-03 02:20:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:19,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:19,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:19,119 INFO L87 Difference]: Start difference. First operand 17749 states and 26548 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-03 02:20:22,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:24,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:27,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:28,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:28,033 INFO L93 Difference]: Finished difference Result 49102 states and 73415 transitions. [2022-11-03 02:20:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:28,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 766 [2022-11-03 02:20:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:28,236 INFO L225 Difference]: With dead ends: 49102 [2022-11-03 02:20:28,237 INFO L226 Difference]: Without dead ends: 31494 [2022-11-03 02:20:28,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:28,317 INFO L413 NwaCegarLoop]: 3272 mSDtfsCounter, 2781 mSDsluCounter, 3065 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 5922 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:28,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2783 Valid, 5922 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 892 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 02:20:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31494 states. [2022-11-03 02:20:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31494 to 31456. [2022-11-03 02:20:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31456 states, 19731 states have (on average 1.3473721554913587) internal successors, (26585), 19848 states have internal predecessors, (26585), 10169 states have call successors, (10169), 1553 states have call predecessors, (10169), 1553 states have return successors, (10185), 10054 states have call predecessors, (10185), 10165 states have call successors, (10185) [2022-11-03 02:20:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31456 states to 31456 states and 46939 transitions. [2022-11-03 02:20:30,497 INFO L78 Accepts]: Start accepts. Automaton has 31456 states and 46939 transitions. Word has length 766 [2022-11-03 02:20:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:30,503 INFO L495 AbstractCegarLoop]: Abstraction has 31456 states and 46939 transitions. [2022-11-03 02:20:30,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-03 02:20:30,504 INFO L276 IsEmpty]: Start isEmpty. Operand 31456 states and 46939 transitions. [2022-11-03 02:20:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2022-11-03 02:20:30,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:30,531 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:30,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:20:30,532 INFO L420 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)] === [2022-11-03 02:20:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash 280173976, now seen corresponding path program 1 times [2022-11-03 02:20:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:30,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352531106] [2022-11-03 02:20:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:30,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 19487 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19487 trivial. 0 not checked. [2022-11-03 02:20:31,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:31,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352531106] [2022-11-03 02:20:31,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352531106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:31,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:31,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:31,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494449702] [2022-11-03 02:20:31,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:31,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:31,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:31,168 INFO L87 Difference]: Start difference. First operand 31456 states and 46939 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-03 02:20:35,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:36,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:39,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:40,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:41,972 INFO L93 Difference]: Finished difference Result 89887 states and 134074 transitions. [2022-11-03 02:20:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:41,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 765 [2022-11-03 02:20:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:42,463 INFO L225 Difference]: With dead ends: 89887 [2022-11-03 02:20:42,463 INFO L226 Difference]: Without dead ends: 58572 [2022-11-03 02:20:42,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:42,578 INFO L413 NwaCegarLoop]: 3352 mSDtfsCounter, 2783 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 6002 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:42,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2783 Valid, 6002 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:20:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58572 states. [2022-11-03 02:20:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58572 to 58538. [2022-11-03 02:20:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58538 states, 36849 states have (on average 1.3466579825775462) internal successors, (49623), 37094 states have internal predecessors, (49623), 18737 states have call successors, (18737), 2949 states have call predecessors, (18737), 2949 states have return successors, (18771), 18494 states have call predecessors, (18771), 18733 states have call successors, (18771) [2022-11-03 02:20:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58538 states to 58538 states and 87131 transitions. [2022-11-03 02:20:46,869 INFO L78 Accepts]: Start accepts. Automaton has 58538 states and 87131 transitions. Word has length 765 [2022-11-03 02:20:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:46,871 INFO L495 AbstractCegarLoop]: Abstraction has 58538 states and 87131 transitions. [2022-11-03 02:20:46,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-03 02:20:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 58538 states and 87131 transitions. [2022-11-03 02:20:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2022-11-03 02:20:46,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:46,885 INFO L195 NwaCegarLoop]: trace histogram [72, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:20:46,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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)] === [2022-11-03 02:20:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1392787716, now seen corresponding path program 1 times [2022-11-03 02:20:46,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:46,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655708221] [2022-11-03 02:20:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20022 trivial. 0 not checked. [2022-11-03 02:20:48,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:48,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655708221] [2022-11-03 02:20:48,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655708221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:48,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:48,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194329044] [2022-11-03 02:20:48,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:48,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:48,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:48,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:48,260 INFO L87 Difference]: Start difference. First operand 58538 states and 87131 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2022-11-03 02:20:57,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:01,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:02,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:06,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:07,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:13,675 INFO L93 Difference]: Finished difference Result 224431 states and 333791 transitions. [2022-11-03 02:21:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:13,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 762 [2022-11-03 02:21:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:14,732 INFO L225 Difference]: With dead ends: 224431 [2022-11-03 02:21:14,732 INFO L226 Difference]: Without dead ends: 166034 [2022-11-03 02:21:14,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:14,975 INFO L413 NwaCegarLoop]: 3604 mSDtfsCounter, 5209 mSDsluCounter, 7425 mSDsCounter, 0 mSdLazyCounter, 5203 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5540 SdHoareTripleChecker+Valid, 9789 SdHoareTripleChecker+Invalid, 5581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 5203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:14,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5540 Valid, 9789 Invalid, 5581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [378 Valid, 5203 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2022-11-03 02:21:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166034 states. [2022-11-03 02:21:24,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166034 to 165738. [2022-11-03 02:21:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165738 states, 104723 states have (on average 1.3473926453596632) internal successors, (141103), 105576 states have internal predecessors, (141103), 52479 states have call successors, (52479), 8533 states have call predecessors, (52479), 8533 states have return successors, (52585), 51628 states have call predecessors, (52585), 52475 states have call successors, (52585) [2022-11-03 02:21:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165738 states to 165738 states and 246167 transitions. [2022-11-03 02:21:25,972 INFO L78 Accepts]: Start accepts. Automaton has 165738 states and 246167 transitions. Word has length 762 [2022-11-03 02:21:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:25,974 INFO L495 AbstractCegarLoop]: Abstraction has 165738 states and 246167 transitions. [2022-11-03 02:21:25,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2022-11-03 02:21:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 165738 states and 246167 transitions. [2022-11-03 02:21:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2022-11-03 02:21:25,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:25,988 INFO L195 NwaCegarLoop]: trace histogram [72, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:25,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:21:25,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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)] === [2022-11-03 02:21:25,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1692521926, now seen corresponding path program 1 times [2022-11-03 02:21:25,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:25,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628990050] [2022-11-03 02:21:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20022 trivial. 0 not checked. [2022-11-03 02:21:26,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:26,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628990050] [2022-11-03 02:21:26,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628990050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:26,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:26,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693654682] [2022-11-03 02:21:26,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:26,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:26,890 INFO L87 Difference]: Start difference. First operand 165738 states and 246167 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2022-11-03 02:21:31,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:33,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:36,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:38,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []