./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW --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 bf04605b927a140287b1c754ad26365df4778b673325ded7dfdba05deed83fbc --- 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-4e7fbc6 [2022-11-23 15:17:26,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:17:26,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:17:26,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:17:26,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:17:26,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:17:26,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:17:26,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:17:26,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:17:26,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:17:26,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:17:26,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:17:26,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:17:26,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:17:26,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:17:26,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:17:26,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:17:26,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:17:26,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:17:26,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:17:26,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:17:26,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:17:26,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:17:26,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:17:26,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:17:26,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:17:26,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:17:26,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:17:26,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:17:26,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:17:26,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:17:26,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:17:26,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:17:26,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:17:26,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:17:26,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:17:26,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:17:26,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:17:26,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:17:26,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:17:26,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:17:26,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:17:26,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:17:26,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:17:26,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:17:26,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:17:26,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:17:26,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:17:26,252 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:17:26,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:17:26,252 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:17:26,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:17:26,253 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:17:26,253 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:17:26,253 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:17:26,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:17:26,253 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:17:26,254 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:17:26,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:17:26,254 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:17:26,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:17:26,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:17:26,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:17:26,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:17:26,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:17:26,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:17:26,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:17:26,258 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:17:26,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:17:26,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:17:26,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:17:26,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:17:26,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:17:26,259 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:17:26,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:17:26,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:17:26,260 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:17:26,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:17:26,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:17:26,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:17:26,261 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf04605b927a140287b1c754ad26365df4778b673325ded7dfdba05deed83fbc [2022-11-23 15:17:26,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:17:26,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:17:26,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:17:26,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:17:26,588 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:17:26,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-23 15:17:29,580 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:17:30,314 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:17:30,314 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-23 15:17:30,381 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/data/d10ad3446/a1db655848fb4e51b02ce157439be48c/FLAG94b4adb46 [2022-11-23 15:17:30,399 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/data/d10ad3446/a1db655848fb4e51b02ce157439be48c [2022-11-23 15:17:30,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:17:30,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:17:30,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:17:30,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:17:30,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:17:30,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:17:30" (1/1) ... [2022-11-23 15:17:30,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4168e356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:30, skipping insertion in model container [2022-11-23 15:17:30,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:17:30" (1/1) ... [2022-11-23 15:17:30,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:17:30,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:17:34,188 WARN L237 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422318,422331] [2022-11-23 15:17:34,200 WARN L237 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422487,422500] [2022-11-23 15:17:34,200 WARN L237 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422654,422667] [2022-11-23 15:17:34,201 WARN L237 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422822,422835] [2022-11-23 15:17:34,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:17:34,339 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:17:34,808 WARN L237 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422318,422331] [2022-11-23 15:17:34,809 WARN L237 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422487,422500] [2022-11-23 15:17:34,810 WARN L237 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422654,422667] [2022-11-23 15:17:34,810 WARN L237 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_c1cf2723-e5d2-460f-abd8-d4904a08d243/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422822,422835] [2022-11-23 15:17:34,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:17:35,088 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:17:35,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35 WrapperNode [2022-11-23 15:17:35,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:17:35,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:17:35,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:17:35,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:17:35,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,505 INFO L138 Inliner]: procedures = 559, calls = 2899, calls flagged for inlining = 295, calls inlined = 261, statements flattened = 7389 [2022-11-23 15:17:35,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:17:35,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:17:35,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:17:35,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:17:35,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:17:35,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:17:35,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:17:35,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:17:35,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:17:35,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:35,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:17:35,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cf2723-e5d2-460f-abd8-d4904a08d243/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:17:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-23 15:17:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-23 15:17:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:17:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:17:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 15:17:36,020 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 15:17:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:17:36,020 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:17:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:17:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:17:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 15:17:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 15:17:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:17:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:17:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:17:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:17:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 15:17:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 15:17:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2022-11-23 15:17:36,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2022-11-23 15:17:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_interrupt [2022-11-23 15:17:36,024 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_interrupt [2022-11-23 15:17:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 15:17:36,025 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 15:17:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:17:36,026 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:17:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:17:36,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:17:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:17:36,026 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:17:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:17:36,027 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:17:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:17:36,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:17:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 15:17:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 15:17:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:17:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_bcr [2022-11-23 15:17:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_bcr [2022-11-23 15:17:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:17:36,029 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:17:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 15:17:36,029 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 15:17:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:17:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2022-11-23 15:17:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2022-11-23 15:17:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:17:36,032 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:17:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-23 15:17:36,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-23 15:17:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:17:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:17:36,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:17:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_tx_ring [2022-11-23 15:17:36,033 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_tx_ring [2022-11-23 15:17:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:17:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:17:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:17:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:17:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:17:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_bcr [2022-11-23 15:17:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_bcr [2022-11-23 15:17:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 15:17:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 15:17:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 15:17:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 15:17:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 15:17:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 15:17:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 15:17:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 15:17:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:17:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:17:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_start [2022-11-23 15:17:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_start [2022-11-23 15:17:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-23 15:17:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-23 15:17:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~~u16~0 [2022-11-23 15:17:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~~u16~0 [2022-11-23 15:17:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:17:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:17:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:17:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 15:17:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 15:17:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 15:17:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 15:17:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-23 15:17:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-23 15:17:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 15:17:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 15:17:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-23 15:17:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-23 15:17:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_open [2022-11-23 15:17:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_open [2022-11-23 15:17:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:17:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 15:17:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 15:17:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:17:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:17:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:17:36,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:17:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:17:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:17:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:17:36,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:17:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_reset [2022-11-23 15:17:36,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_reset [2022-11-23 15:17:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_pcnet32_private [2022-11-23 15:17:36,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_pcnet32_private [2022-11-23 15:17:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 15:17:36,052 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 15:17:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_restart [2022-11-23 15:17:36,054 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_restart [2022-11-23 15:17:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 15:17:36,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 15:17:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-23 15:17:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-23 15:17:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:17:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:17:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 15:17:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 15:17:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 15:17:36,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 15:17:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_csr [2022-11-23 15:17:36,061 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_csr [2022-11-23 15:17:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-23 15:17:36,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-23 15:17:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:17:36,062 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:17:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_reset [2022-11-23 15:17:36,062 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_reset [2022-11-23 15:17:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-23 15:17:36,062 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-23 15:17:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:17:36,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:17:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 15:17:36,063 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 15:17:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:17:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:17:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:17:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:17:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_pm_resume [2022-11-23 15:17:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_pm_resume [2022-11-23 15:17:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:17:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:17:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_check_media [2022-11-23 15:17:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_check_media [2022-11-23 15:17:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_get_regs_len [2022-11-23 15:17:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_get_regs_len [2022-11-23 15:17:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-23 15:17:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 15:17:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 15:17:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_poll_controller [2022-11-23 15:17:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_poll_controller [2022-11-23 15:17:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_free_ring [2022-11-23 15:17:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_free_ring [2022-11-23 15:17:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 15:17:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 15:17:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:17:36,067 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:17:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-23 15:17:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-23 15:17:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:17:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:17:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 15:17:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 15:17:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2022-11-23 15:17:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2022-11-23 15:17:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_rx_ring [2022-11-23 15:17:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_rx_ring [2022-11-23 15:17:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_csr [2022-11-23 15:17:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_csr [2022-11-23 15:17:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_tx_timeout [2022-11-23 15:17:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_tx_timeout [2022-11-23 15:17:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 15:17:36,070 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 15:17:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:17:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_stop [2022-11-23 15:17:36,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_stop [2022-11-23 15:17:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 15:17:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 15:17:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:17:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_pcnet32_private [2022-11-23 15:17:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_pcnet32_private [2022-11-23 15:17:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:17:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_csr [2022-11-23 15:17:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_csr [2022-11-23 15:17:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_set_multicast_list [2022-11-23 15:17:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_set_multicast_list [2022-11-23 15:17:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-23 15:17:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-23 15:17:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:17:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:17:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2022-11-23 15:17:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2022-11-23 15:17:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:17:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:17:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_probe1 [2022-11-23 15:17:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_probe1 [2022-11-23 15:17:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-23 15:17:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-23 15:17:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 15:17:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 15:17:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_remove_one [2022-11-23 15:17:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_remove_one [2022-11-23 15:17:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2022-11-23 15:17:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2022-11-23 15:17:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2022-11-23 15:17:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2022-11-23 15:17:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_bcr [2022-11-23 15:17:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_bcr [2022-11-23 15:17:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-23 15:17:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-23 15:17:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 15:17:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 15:17:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:17:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:17:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_bcr [2022-11-23 15:17:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_bcr [2022-11-23 15:17:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:17:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:17:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_init_ring [2022-11-23 15:17:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_init_ring [2022-11-23 15:17:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_close [2022-11-23 15:17:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_close [2022-11-23 15:17:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-23 15:17:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-23 15:17:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:17:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:17:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:17:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_suspend [2022-11-23 15:17:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_suspend [2022-11-23 15:17:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:17:36,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:17:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 15:17:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 15:17:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 15:17:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 15:17:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_csr [2022-11-23 15:17:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_csr [2022-11-23 15:17:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_load_multicast [2022-11-23 15:17:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_load_multicast [2022-11-23 15:17:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-23 15:17:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-23 15:17:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_nway_reset [2022-11-23 15:17:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_nway_reset [2022-11-23 15:17:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:17:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:17:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 15:17:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 15:17:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 15:17:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 15:17:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-23 15:17:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-23 15:17:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-23 15:17:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-23 15:17:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:17:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-23 15:17:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-23 15:17:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-23 15:17:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-23 15:17:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:17:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:17:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 15:17:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 15:17:37,222 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:17:37,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:17:37,435 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:17:46,792 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 15:17:46,971 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:17:49,251 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:17:49,252 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-23 15:17:49,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:17:49 BoogieIcfgContainer [2022-11-23 15:17:49,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:17:49,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:17:49,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:17:49,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:17:49,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:17:30" (1/3) ... [2022-11-23 15:17:49,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac9a17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:17:49, skipping insertion in model container [2022-11-23 15:17:49,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (2/3) ... [2022-11-23 15:17:49,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac9a17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:17:49, skipping insertion in model container [2022-11-23 15:17:49,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:17:49" (3/3) ... [2022-11-23 15:17:49,266 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-23 15:17:49,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:17:49,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 15:17:49,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:17:49,416 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;@4be4bf62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:17:49,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 15:17:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 1997 states, 1182 states have (on average 1.3164128595600677) internal successors, (1556), 1224 states have internal predecessors, (1556), 692 states have call successors, (692), 123 states have call predecessors, (692), 122 states have return successors, (684), 671 states have call predecessors, (684), 684 states have call successors, (684) [2022-11-23 15:17:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-23 15:17:49,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:49,447 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:49,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:17:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash -446688215, now seen corresponding path program 1 times [2022-11-23 15:17:49,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:49,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394595283] [2022-11-23 15:17:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:49,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 15:17:50,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:50,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394595283] [2022-11-23 15:17:50,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394595283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:50,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:50,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:50,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352759144] [2022-11-23 15:17:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:50,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:50,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:50,366 INFO L87 Difference]: Start difference. First operand has 1997 states, 1182 states have (on average 1.3164128595600677) internal successors, (1556), 1224 states have internal predecessors, (1556), 692 states have call successors, (692), 123 states have call predecessors, (692), 122 states have return successors, (684), 671 states have call predecessors, (684), 684 states have call successors, (684) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 15:17:54,811 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 [] [2022-11-23 15:17:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:55,407 INFO L93 Difference]: Finished difference Result 5718 states and 8561 transitions. [2022-11-23 15:17:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:55,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2022-11-23 15:17:55,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:55,454 INFO L225 Difference]: With dead ends: 5718 [2022-11-23 15:17:55,454 INFO L226 Difference]: Without dead ends: 3736 [2022-11-23 15:17:55,470 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 [2022-11-23 15:17:55,473 INFO L413 NwaCegarLoop]: 3125 mSDtfsCounter, 2624 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:55,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2626 Valid, 5575 Invalid, 822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 15:17:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-11-23 15:17:55,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3732. [2022-11-23 15:17:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 2222 states have (on average 1.3123312331233123) internal successors, (2916), 2297 states have internal predecessors, (2916), 1269 states have call successors, (1269), 239 states have call predecessors, (1269), 238 states have return successors, (1267), 1241 states have call predecessors, (1267), 1265 states have call successors, (1267) [2022-11-23 15:17:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 5452 transitions. [2022-11-23 15:17:55,784 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 5452 transitions. Word has length 152 [2022-11-23 15:17:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:55,786 INFO L495 AbstractCegarLoop]: Abstraction has 3732 states and 5452 transitions. [2022-11-23 15:17:55,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 15:17:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 5452 transitions. [2022-11-23 15:17:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-23 15:17:55,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:55,791 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:55,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:17:55,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:17:55,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1128458331, now seen corresponding path program 1 times [2022-11-23 15:17:55,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:55,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611913638] [2022-11-23 15:17:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:55,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 15:17:56,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611913638] [2022-11-23 15:17:56,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611913638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:56,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:56,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:56,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429270938] [2022-11-23 15:17:56,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:56,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:56,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:56,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:56,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:56,192 INFO L87 Difference]: Start difference. First operand 3732 states and 5452 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 15:18:00,785 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 [] [2022-11-23 15:18:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:01,358 INFO L93 Difference]: Finished difference Result 10976 states and 16063 transitions. [2022-11-23 15:18:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:01,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2022-11-23 15:18:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:01,420 INFO L225 Difference]: With dead ends: 10976 [2022-11-23 15:18:01,421 INFO L226 Difference]: Without dead ends: 7271 [2022-11-23 15:18:01,445 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 [2022-11-23 15:18:01,447 INFO L413 NwaCegarLoop]: 3325 mSDtfsCounter, 2746 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 5758 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:01,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2746 Valid, 5758 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 828 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 15:18:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2022-11-23 15:18:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 7241. [2022-11-23 15:18:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 4331 states have (on average 1.315400600323251) internal successors, (5697), 4486 states have internal predecessors, (5697), 2439 states have call successors, (2439), 475 states have call predecessors, (2439), 468 states have return successors, (2470), 2369 states have call predecessors, (2470), 2435 states have call successors, (2470) [2022-11-23 15:18:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 10606 transitions. [2022-11-23 15:18:02,102 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 10606 transitions. Word has length 155 [2022-11-23 15:18:02,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:02,105 INFO L495 AbstractCegarLoop]: Abstraction has 7241 states and 10606 transitions. [2022-11-23 15:18:02,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 15:18:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 10606 transitions. [2022-11-23 15:18:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-23 15:18:02,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:02,114 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:02,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:18:02,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:02,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:02,126 INFO L85 PathProgramCache]: Analyzing trace with hash -205773031, now seen corresponding path program 1 times [2022-11-23 15:18:02,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:02,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535691755] [2022-11-23 15:18:02,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:02,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 15:18:02,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:02,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535691755] [2022-11-23 15:18:02,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535691755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:02,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:02,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:02,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360096672] [2022-11-23 15:18:02,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:02,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:02,588 INFO L87 Difference]: Start difference. First operand 7241 states and 10606 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 15:18:05,458 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 [] [2022-11-23 15:18:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:07,399 INFO L93 Difference]: Finished difference Result 19511 states and 28367 transitions. [2022-11-23 15:18:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:07,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-11-23 15:18:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:07,481 INFO L225 Difference]: With dead ends: 19511 [2022-11-23 15:18:07,481 INFO L226 Difference]: Without dead ends: 12297 [2022-11-23 15:18:07,520 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 [2022-11-23 15:18:07,521 INFO L413 NwaCegarLoop]: 2977 mSDtfsCounter, 1937 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:07,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1937 Valid, 5393 Invalid, 855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 847 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 15:18:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12297 states. [2022-11-23 15:18:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12297 to 12269. [2022-11-23 15:18:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12269 states, 7311 states have (on average 1.305019833128163) internal successors, (9541), 7568 states have internal predecessors, (9541), 4064 states have call successors, (4064), 906 states have call predecessors, (4064), 891 states have return successors, (4139), 3924 states have call predecessors, (4139), 4060 states have call successors, (4139) [2022-11-23 15:18:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12269 states to 12269 states and 17744 transitions. [2022-11-23 15:18:08,404 INFO L78 Accepts]: Start accepts. Automaton has 12269 states and 17744 transitions. Word has length 153 [2022-11-23 15:18:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:08,406 INFO L495 AbstractCegarLoop]: Abstraction has 12269 states and 17744 transitions. [2022-11-23 15:18:08,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 15:18:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 12269 states and 17744 transitions. [2022-11-23 15:18:08,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 15:18:08,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:08,411 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:08,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:18:08,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:08,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:08,413 INFO L85 PathProgramCache]: Analyzing trace with hash -279394470, now seen corresponding path program 1 times [2022-11-23 15:18:08,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:08,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576632925] [2022-11-23 15:18:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:08,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 15:18:08,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:08,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576632925] [2022-11-23 15:18:08,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576632925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:08,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:08,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:08,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331466797] [2022-11-23 15:18:08,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:08,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:08,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:08,729 INFO L87 Difference]: Start difference. First operand 12269 states and 17744 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 15:18:11,828 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 [] [2022-11-23 15:18:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:13,709 INFO L93 Difference]: Finished difference Result 24456 states and 35157 transitions. [2022-11-23 15:18:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 156 [2022-11-23 15:18:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:13,786 INFO L225 Difference]: With dead ends: 24456 [2022-11-23 15:18:13,786 INFO L226 Difference]: Without dead ends: 12214 [2022-11-23 15:18:13,844 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 [2022-11-23 15:18:13,845 INFO L413 NwaCegarLoop]: 3804 mSDtfsCounter, 2131 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2132 SdHoareTripleChecker+Valid, 6259 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:13,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2132 Valid, 6259 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1056 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-23 15:18:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12214 states. [2022-11-23 15:18:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12214 to 12180. [2022-11-23 15:18:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12180 states, 7209 states have (on average 1.3040643639894576) internal successors, (9401), 7474 states have internal predecessors, (9401), 3932 states have call successors, (3932), 1051 states have call predecessors, (3932), 1036 states have return successors, (4002), 3769 states have call predecessors, (4002), 3928 states have call successors, (4002) [2022-11-23 15:18:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 17335 transitions. [2022-11-23 15:18:14,840 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 17335 transitions. Word has length 156 [2022-11-23 15:18:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:14,841 INFO L495 AbstractCegarLoop]: Abstraction has 12180 states and 17335 transitions. [2022-11-23 15:18:14,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 15:18:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 17335 transitions. [2022-11-23 15:18:14,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-23 15:18:14,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:14,848 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2022-11-23 15:18:14,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:18:14,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 955607024, now seen corresponding path program 1 times [2022-11-23 15:18:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:14,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039925046] [2022-11-23 15:18:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-23 15:18:15,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:15,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039925046] [2022-11-23 15:18:15,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039925046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:15,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:15,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:18:15,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115705093] [2022-11-23 15:18:15,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:15,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:18:15,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:15,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:18:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:18:15,658 INFO L87 Difference]: Start difference. First operand 12180 states and 17335 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 15:18:18,821 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 [] [2022-11-23 15:18:21,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:21,047 INFO L93 Difference]: Finished difference Result 12912 states and 18226 transitions. [2022-11-23 15:18:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:18:21,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 196 [2022-11-23 15:18:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:21,110 INFO L225 Difference]: With dead ends: 12912 [2022-11-23 15:18:21,111 INFO L226 Difference]: Without dead ends: 12910 [2022-11-23 15:18:21,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:18:21,119 INFO L413 NwaCegarLoop]: 2688 mSDtfsCounter, 2677 mSDsluCounter, 6103 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 8791 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:21,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2691 Valid, 8791 Invalid, 1351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1348 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-23 15:18:21,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12910 states. [2022-11-23 15:18:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12910 to 12906. [2022-11-23 15:18:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12906 states, 7609 states have (on average 1.2976738073334209) internal successors, (9874), 7896 states have internal predecessors, (9874), 4138 states have call successors, (4138), 1168 states have call predecessors, (4138), 1156 states have return successors, (4210), 3967 states have call predecessors, (4210), 4134 states have call successors, (4210) [2022-11-23 15:18:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12906 states to 12906 states and 18222 transitions. [2022-11-23 15:18:22,016 INFO L78 Accepts]: Start accepts. Automaton has 12906 states and 18222 transitions. Word has length 196 [2022-11-23 15:18:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:22,017 INFO L495 AbstractCegarLoop]: Abstraction has 12906 states and 18222 transitions. [2022-11-23 15:18:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 15:18:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 12906 states and 18222 transitions. [2022-11-23 15:18:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-23 15:18:22,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:22,022 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2022-11-23 15:18:22,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:18:22,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1240235471, now seen corresponding path program 1 times [2022-11-23 15:18:22,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:22,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186876703] [2022-11-23 15:18:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:22,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-23 15:18:22,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:22,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186876703] [2022-11-23 15:18:22,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186876703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:22,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:22,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:18:22,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659898403] [2022-11-23 15:18:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:22,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:18:22,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:18:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:18:22,661 INFO L87 Difference]: Start difference. First operand 12906 states and 18222 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 15:18:25,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:29,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:29,742 INFO L93 Difference]: Finished difference Result 12934 states and 18241 transitions. [2022-11-23 15:18:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:18:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 202 [2022-11-23 15:18:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:29,802 INFO L225 Difference]: With dead ends: 12934 [2022-11-23 15:18:29,803 INFO L226 Difference]: Without dead ends: 12932 [2022-11-23 15:18:29,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:18:29,811 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2684 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:29,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 8757 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 15:18:29,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12932 states. [2022-11-23 15:18:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12932 to 12928. [2022-11-23 15:18:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12928 states, 7623 states have (on average 1.2972582972582973) internal successors, (9889), 7910 states have internal predecessors, (9889), 4138 states have call successors, (4138), 1176 states have call predecessors, (4138), 1164 states have return successors, (4210), 3967 states have call predecessors, (4210), 4134 states have call successors, (4210) [2022-11-23 15:18:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12928 states to 12928 states and 18237 transitions. [2022-11-23 15:18:30,899 INFO L78 Accepts]: Start accepts. Automaton has 12928 states and 18237 transitions. Word has length 202 [2022-11-23 15:18:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:30,900 INFO L495 AbstractCegarLoop]: Abstraction has 12928 states and 18237 transitions. [2022-11-23 15:18:30,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 15:18:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12928 states and 18237 transitions. [2022-11-23 15:18:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-23 15:18:30,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:30,908 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2022-11-23 15:18:30,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:18:30,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:30,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash 849156138, now seen corresponding path program 1 times [2022-11-23 15:18:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:30,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75339261] [2022-11-23 15:18:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:30,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-23 15:18:31,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:31,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75339261] [2022-11-23 15:18:31,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75339261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:31,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:31,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:31,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503862356] [2022-11-23 15:18:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:31,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:31,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:31,336 INFO L87 Difference]: Start difference. First operand 12928 states and 18237 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-23 15:18:34,366 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 [] [2022-11-23 15:18:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:37,205 INFO L93 Difference]: Finished difference Result 30351 states and 42799 transitions. [2022-11-23 15:18:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 205 [2022-11-23 15:18:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:37,299 INFO L225 Difference]: With dead ends: 30351 [2022-11-23 15:18:37,300 INFO L226 Difference]: Without dead ends: 17653 [2022-11-23 15:18:37,352 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 [2022-11-23 15:18:37,353 INFO L413 NwaCegarLoop]: 3688 mSDtfsCounter, 2128 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2129 SdHoareTripleChecker+Valid, 6137 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:37,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2129 Valid, 6137 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1014 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 15:18:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17653 states. [2022-11-23 15:18:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17653 to 17611. [2022-11-23 15:18:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17611 states, 10384 states have (on average 1.2989214175654853) internal successors, (13488), 10785 states have internal predecessors, (13488), 5606 states have call successors, (5606), 1637 states have call predecessors, (5606), 1618 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-23 15:18:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17611 states to 17611 states and 24800 transitions. [2022-11-23 15:18:38,616 INFO L78 Accepts]: Start accepts. Automaton has 17611 states and 24800 transitions. Word has length 205 [2022-11-23 15:18:38,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:38,617 INFO L495 AbstractCegarLoop]: Abstraction has 17611 states and 24800 transitions. [2022-11-23 15:18:38,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-23 15:18:38,618 INFO L276 IsEmpty]: Start isEmpty. Operand 17611 states and 24800 transitions. [2022-11-23 15:18:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-23 15:18:38,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:38,624 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:38,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:18:38,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:38,625 INFO L85 PathProgramCache]: Analyzing trace with hash -819362846, now seen corresponding path program 1 times [2022-11-23 15:18:38,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:38,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043371838] [2022-11-23 15:18:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:38,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-11-23 15:18:39,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:39,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043371838] [2022-11-23 15:18:39,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043371838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:39,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:39,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:18:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886486637] [2022-11-23 15:18:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:39,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:18:39,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:18:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:18:39,320 INFO L87 Difference]: Start difference. First operand 17611 states and 24800 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 15:18:42,187 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 [] [2022-11-23 15:18:44,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:44,799 INFO L93 Difference]: Finished difference Result 17621 states and 24807 transitions. [2022-11-23 15:18:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:18:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 205 [2022-11-23 15:18:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:44,897 INFO L225 Difference]: With dead ends: 17621 [2022-11-23 15:18:44,898 INFO L226 Difference]: Without dead ends: 17619 [2022-11-23 15:18:44,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:18:44,909 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2685 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:44,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 8757 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 15:18:44,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17619 states. [2022-11-23 15:18:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17619 to 17615. [2022-11-23 15:18:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17615 states, 10387 states have (on average 1.2988350823144315) internal successors, (13491), 10788 states have internal predecessors, (13491), 5606 states have call successors, (5606), 1638 states have call predecessors, (5606), 1619 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-23 15:18:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17615 states to 17615 states and 24803 transitions. [2022-11-23 15:18:46,227 INFO L78 Accepts]: Start accepts. Automaton has 17615 states and 24803 transitions. Word has length 205 [2022-11-23 15:18:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:46,229 INFO L495 AbstractCegarLoop]: Abstraction has 17615 states and 24803 transitions. [2022-11-23 15:18:46,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 15:18:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 17615 states and 24803 transitions. [2022-11-23 15:18:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-23 15:18:46,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:46,236 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:46,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:18:46,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:46,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash 38759089, now seen corresponding path program 1 times [2022-11-23 15:18:46,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:46,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933521401] [2022-11-23 15:18:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2022-11-23 15:18:46,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:46,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933521401] [2022-11-23 15:18:46,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933521401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:46,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:46,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:18:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166435287] [2022-11-23 15:18:46,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:46,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:18:46,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:46,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:18:46,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:18:46,790 INFO L87 Difference]: Start difference. First operand 17615 states and 24803 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:18:49,699 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 [] [2022-11-23 15:18:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:53,045 INFO L93 Difference]: Finished difference Result 17625 states and 24810 transitions. [2022-11-23 15:18:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:18:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 212 [2022-11-23 15:18:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:53,131 INFO L225 Difference]: With dead ends: 17625 [2022-11-23 15:18:53,131 INFO L226 Difference]: Without dead ends: 17623 [2022-11-23 15:18:53,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:18:53,143 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2684 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:53,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2695 Valid, 8757 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1347 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-23 15:18:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17623 states. [2022-11-23 15:18:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17623 to 17619. [2022-11-23 15:18:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17619 states, 10390 states have (on average 1.2987487969201155) internal successors, (13494), 10791 states have internal predecessors, (13494), 5606 states have call successors, (5606), 1639 states have call predecessors, (5606), 1620 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-23 15:18:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17619 states to 17619 states and 24806 transitions. [2022-11-23 15:18:54,312 INFO L78 Accepts]: Start accepts. Automaton has 17619 states and 24806 transitions. Word has length 212 [2022-11-23 15:18:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:54,313 INFO L495 AbstractCegarLoop]: Abstraction has 17619 states and 24806 transitions. [2022-11-23 15:18:54,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 15:18:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 17619 states and 24806 transitions. [2022-11-23 15:18:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-23 15:18:54,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:54,322 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 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] [2022-11-23 15:18:54,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:18:54,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:54,323 INFO L85 PathProgramCache]: Analyzing trace with hash -429046928, now seen corresponding path program 1 times [2022-11-23 15:18:54,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:54,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141104441] [2022-11-23 15:18:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:54,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2022-11-23 15:18:54,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:54,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141104441] [2022-11-23 15:18:54,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141104441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:54,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:54,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:18:54,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236130440] [2022-11-23 15:18:54,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:54,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:18:54,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:54,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:18:54,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:18:54,869 INFO L87 Difference]: Start difference. First operand 17619 states and 24806 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 15:18:57,680 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 [] [2022-11-23 15:19:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:00,223 INFO L93 Difference]: Finished difference Result 17629 states and 24813 transitions. [2022-11-23 15:19:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:19:00,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 216 [2022-11-23 15:19:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:00,315 INFO L225 Difference]: With dead ends: 17629 [2022-11-23 15:19:00,316 INFO L226 Difference]: Without dead ends: 17627 [2022-11-23 15:19:00,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:19:00,328 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2684 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:00,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 8757 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1347 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 15:19:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17627 states. [2022-11-23 15:19:01,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17627 to 17623. [2022-11-23 15:19:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17623 states, 10393 states have (on average 1.298662561339363) internal successors, (13497), 10794 states have internal predecessors, (13497), 5606 states have call successors, (5606), 1640 states have call predecessors, (5606), 1621 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-23 15:19:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17623 states to 17623 states and 24809 transitions. [2022-11-23 15:19:01,705 INFO L78 Accepts]: Start accepts. Automaton has 17623 states and 24809 transitions. Word has length 216 [2022-11-23 15:19:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:01,706 INFO L495 AbstractCegarLoop]: Abstraction has 17623 states and 24809 transitions. [2022-11-23 15:19:01,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 15:19:01,706 INFO L276 IsEmpty]: Start isEmpty. Operand 17623 states and 24809 transitions. [2022-11-23 15:19:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-23 15:19:01,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:01,714 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 4, 4, 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] [2022-11-23 15:19:01,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:19:01,714 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1782639712, now seen corresponding path program 1 times [2022-11-23 15:19:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:01,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107090903] [2022-11-23 15:19:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2022-11-23 15:19:02,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:02,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107090903] [2022-11-23 15:19:02,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107090903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:02,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:02,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:19:02,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946943493] [2022-11-23 15:19:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:02,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:19:02,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:02,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:19:02,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:02,307 INFO L87 Difference]: Start difference. First operand 17623 states and 24809 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 15:19:05,184 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 [] [2022-11-23 15:19:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:08,037 INFO L93 Difference]: Finished difference Result 17633 states and 24816 transitions. [2022-11-23 15:19:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:19:08,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 221 [2022-11-23 15:19:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:08,120 INFO L225 Difference]: With dead ends: 17633 [2022-11-23 15:19:08,120 INFO L226 Difference]: Without dead ends: 17631 [2022-11-23 15:19:08,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:19:08,136 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2684 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:08,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2693 Valid, 8757 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-23 15:19:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17631 states. [2022-11-23 15:19:09,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17631 to 17627. [2022-11-23 15:19:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17627 states, 10396 states have (on average 1.2985763755290496) internal successors, (13500), 10797 states have internal predecessors, (13500), 5606 states have call successors, (5606), 1641 states have call predecessors, (5606), 1622 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-23 15:19:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17627 states to 17627 states and 24812 transitions. [2022-11-23 15:19:09,340 INFO L78 Accepts]: Start accepts. Automaton has 17627 states and 24812 transitions. Word has length 221 [2022-11-23 15:19:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:09,341 INFO L495 AbstractCegarLoop]: Abstraction has 17627 states and 24812 transitions. [2022-11-23 15:19:09,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 15:19:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 17627 states and 24812 transitions. [2022-11-23 15:19:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-23 15:19:09,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:09,348 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 4, 4, 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] [2022-11-23 15:19:09,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:19:09,349 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:09,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:09,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1709280976, now seen corresponding path program 1 times [2022-11-23 15:19:09,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:09,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418125117] [2022-11-23 15:19:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:09,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-11-23 15:19:09,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418125117] [2022-11-23 15:19:09,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418125117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:09,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:09,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:19:09,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559597747] [2022-11-23 15:19:09,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:09,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:19:09,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:19:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:09,939 INFO L87 Difference]: Start difference. First operand 17627 states and 24812 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 15:19:12,888 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 [] [2022-11-23 15:19:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:15,420 INFO L93 Difference]: Finished difference Result 17637 states and 24819 transitions. [2022-11-23 15:19:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:19:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 226 [2022-11-23 15:19:15,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:15,493 INFO L225 Difference]: With dead ends: 17637 [2022-11-23 15:19:15,493 INFO L226 Difference]: Without dead ends: 17635 [2022-11-23 15:19:15,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:19:15,507 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2684 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:15,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 8757 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1347 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 15:19:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17635 states. [2022-11-23 15:19:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17635 to 17631. [2022-11-23 15:19:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17631 states, 10399 states have (on average 1.2984902394461006) internal successors, (13503), 10800 states have internal predecessors, (13503), 5606 states have call successors, (5606), 1642 states have call predecessors, (5606), 1623 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-23 15:19:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17631 states to 17631 states and 24815 transitions. [2022-11-23 15:19:16,775 INFO L78 Accepts]: Start accepts. Automaton has 17631 states and 24815 transitions. Word has length 226 [2022-11-23 15:19:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:16,775 INFO L495 AbstractCegarLoop]: Abstraction has 17631 states and 24815 transitions. [2022-11-23 15:19:16,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 15:19:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 17631 states and 24815 transitions. [2022-11-23 15:19:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-23 15:19:16,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:16,782 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 4, 4, 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] [2022-11-23 15:19:16,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:19:16,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:16,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:16,783 INFO L85 PathProgramCache]: Analyzing trace with hash 164522929, now seen corresponding path program 1 times [2022-11-23 15:19:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:16,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715761309] [2022-11-23 15:19:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:16,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2022-11-23 15:19:17,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:17,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715761309] [2022-11-23 15:19:17,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715761309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:17,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:17,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:19:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190182960] [2022-11-23 15:19:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:17,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:19:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:17,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:19:17,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:19:17,451 INFO L87 Difference]: Start difference. First operand 17631 states and 24815 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 15:19:20,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:25,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:34,579 INFO L93 Difference]: Finished difference Result 28597 states and 40276 transitions. [2022-11-23 15:19:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:19:34,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 232 [2022-11-23 15:19:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:34,681 INFO L225 Difference]: With dead ends: 28597 [2022-11-23 15:19:34,681 INFO L226 Difference]: Without dead ends: 28595 [2022-11-23 15:19:34,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:19:34,693 INFO L413 NwaCegarLoop]: 2565 mSDtfsCounter, 2474 mSDsluCounter, 6350 mSDsCounter, 0 mSdLazyCounter, 5806 mSolverCounterSat, 515 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 8915 SdHoareTripleChecker+Invalid, 6323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 5806 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:34,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2710 Valid, 8915 Invalid, 6323 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [515 Valid, 5806 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2022-11-23 15:19:34,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28595 states. [2022-11-23 15:19:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28595 to 28521. [2022-11-23 15:19:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28521 states, 16846 states have (on average 1.310637540068859) internal successors, (22079), 17603 states have internal predecessors, (22079), 8906 states have call successors, (8906), 2854 states have call predecessors, (8906), 2766 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-23 15:19:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28521 states to 28521 states and 40173 transitions. [2022-11-23 15:19:36,737 INFO L78 Accepts]: Start accepts. Automaton has 28521 states and 40173 transitions. Word has length 232 [2022-11-23 15:19:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:36,738 INFO L495 AbstractCegarLoop]: Abstraction has 28521 states and 40173 transitions. [2022-11-23 15:19:36,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 15:19:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 28521 states and 40173 transitions. [2022-11-23 15:19:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-23 15:19:36,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:36,745 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 4, 4, 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] [2022-11-23 15:19:36,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:19:36,746 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash 636690160, now seen corresponding path program 1 times [2022-11-23 15:19:36,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:36,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118500822] [2022-11-23 15:19:36,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:36,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2022-11-23 15:19:37,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:37,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118500822] [2022-11-23 15:19:37,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118500822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:37,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:37,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:19:37,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095473407] [2022-11-23 15:19:37,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:19:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:19:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:37,480 INFO L87 Difference]: Start difference. First operand 28521 states and 40173 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 15:19:40,663 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 [] [2022-11-23 15:19:44,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:44,499 INFO L93 Difference]: Finished difference Result 28535 states and 40184 transitions. [2022-11-23 15:19:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:19:44,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 236 [2022-11-23 15:19:44,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:44,585 INFO L225 Difference]: With dead ends: 28535 [2022-11-23 15:19:44,585 INFO L226 Difference]: Without dead ends: 28533 [2022-11-23 15:19:44,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:19:44,598 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2684 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:44,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 8757 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 15:19:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28533 states. [2022-11-23 15:19:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28533 to 28529. [2022-11-23 15:19:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28529 states, 16852 states have (on average 1.3105269404225017) internal successors, (22085), 17609 states have internal predecessors, (22085), 8906 states have call successors, (8906), 2856 states have call predecessors, (8906), 2768 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-23 15:19:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28529 states to 28529 states and 40179 transitions. [2022-11-23 15:19:46,623 INFO L78 Accepts]: Start accepts. Automaton has 28529 states and 40179 transitions. Word has length 236 [2022-11-23 15:19:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:46,624 INFO L495 AbstractCegarLoop]: Abstraction has 28529 states and 40179 transitions. [2022-11-23 15:19:46,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 15:19:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28529 states and 40179 transitions. [2022-11-23 15:19:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-23 15:19:46,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:46,632 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 4, 4, 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] [2022-11-23 15:19:46,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:19:46,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:46,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash 977597550, now seen corresponding path program 1 times [2022-11-23 15:19:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:46,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673568895] [2022-11-23 15:19:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:46,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2022-11-23 15:19:47,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:47,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673568895] [2022-11-23 15:19:47,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673568895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:47,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:47,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:19:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882662325] [2022-11-23 15:19:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:47,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:19:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:19:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:47,271 INFO L87 Difference]: Start difference. First operand 28529 states and 40179 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 15:19:50,295 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 [] [2022-11-23 15:19:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:54,327 INFO L93 Difference]: Finished difference Result 28543 states and 40190 transitions. [2022-11-23 15:19:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:19:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 240 [2022-11-23 15:19:54,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:54,413 INFO L225 Difference]: With dead ends: 28543 [2022-11-23 15:19:54,413 INFO L226 Difference]: Without dead ends: 28541 [2022-11-23 15:19:54,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:19:54,426 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2685 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:54,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 8757 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 15:19:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28541 states. [2022-11-23 15:19:56,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28541 to 28537. [2022-11-23 15:19:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28537 states, 16858 states have (on average 1.310416419504093) internal successors, (22091), 17615 states have internal predecessors, (22091), 8906 states have call successors, (8906), 2858 states have call predecessors, (8906), 2770 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-23 15:19:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28537 states to 28537 states and 40185 transitions. [2022-11-23 15:19:57,034 INFO L78 Accepts]: Start accepts. Automaton has 28537 states and 40185 transitions. Word has length 240 [2022-11-23 15:19:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:57,035 INFO L495 AbstractCegarLoop]: Abstraction has 28537 states and 40185 transitions. [2022-11-23 15:19:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 15:19:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 28537 states and 40185 transitions. [2022-11-23 15:19:57,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-23 15:19:57,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:57,042 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 4, 4, 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] [2022-11-23 15:19:57,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 15:19:57,042 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:57,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1470795009, now seen corresponding path program 1 times [2022-11-23 15:19:57,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:57,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056767694] [2022-11-23 15:19:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:57,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2022-11-23 15:19:57,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:57,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056767694] [2022-11-23 15:19:57,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056767694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:57,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:57,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:19:57,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868228595] [2022-11-23 15:19:57,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:57,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:19:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:19:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:57,539 INFO L87 Difference]: Start difference. First operand 28537 states and 40185 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 15:20:00,641 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 [] [2022-11-23 15:20:04,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:04,605 INFO L93 Difference]: Finished difference Result 28551 states and 40196 transitions. [2022-11-23 15:20:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:04,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 247 [2022-11-23 15:20:04,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:04,686 INFO L225 Difference]: With dead ends: 28551 [2022-11-23 15:20:04,686 INFO L226 Difference]: Without dead ends: 28549 [2022-11-23 15:20:04,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:20:04,695 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2684 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:04,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2688 Valid, 8757 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-23 15:20:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28549 states. [2022-11-23 15:20:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28549 to 28545. [2022-11-23 15:20:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28545 states, 16864 states have (on average 1.3103059772296015) internal successors, (22097), 17621 states have internal predecessors, (22097), 8906 states have call successors, (8906), 2860 states have call predecessors, (8906), 2772 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-23 15:20:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28545 states to 28545 states and 40191 transitions. [2022-11-23 15:20:07,510 INFO L78 Accepts]: Start accepts. Automaton has 28545 states and 40191 transitions. Word has length 247 [2022-11-23 15:20:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:07,511 INFO L495 AbstractCegarLoop]: Abstraction has 28545 states and 40191 transitions. [2022-11-23 15:20:07,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-23 15:20:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 28545 states and 40191 transitions. [2022-11-23 15:20:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-23 15:20:07,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:07,518 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 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] [2022-11-23 15:20:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 15:20:07,518 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1696335075, now seen corresponding path program 1 times [2022-11-23 15:20:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:07,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248214126] [2022-11-23 15:20:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:07,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2022-11-23 15:20:08,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:08,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248214126] [2022-11-23 15:20:08,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248214126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:08,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:08,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:20:08,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870608202] [2022-11-23 15:20:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:08,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:20:08,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:20:08,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:20:08,376 INFO L87 Difference]: Start difference. First operand 28545 states and 40191 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 15:20:12,225 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 [] [2022-11-23 15:20:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:17,997 INFO L93 Difference]: Finished difference Result 57148 states and 80697 transitions. [2022-11-23 15:20:17,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:20:17,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 257 [2022-11-23 15:20:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:18,124 INFO L225 Difference]: With dead ends: 57148 [2022-11-23 15:20:18,124 INFO L226 Difference]: Without dead ends: 28833 [2022-11-23 15:20:18,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:20:18,227 INFO L413 NwaCegarLoop]: 2483 mSDtfsCounter, 11 mSDsluCounter, 14856 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 17339 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:18,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 17339 Invalid, 2920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2911 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 15:20:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28833 states. [2022-11-23 15:20:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28833 to 28653. [2022-11-23 15:20:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28653 states, 16936 states have (on average 1.3089867737364194) internal successors, (22169), 17657 states have internal predecessors, (22169), 8942 states have call successors, (8942), 2860 states have call predecessors, (8942), 2772 states have return successors, (9224), 8342 states have call predecessors, (9224), 8934 states have call successors, (9224) [2022-11-23 15:20:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28653 states to 28653 states and 40335 transitions. [2022-11-23 15:20:21,257 INFO L78 Accepts]: Start accepts. Automaton has 28653 states and 40335 transitions. Word has length 257 [2022-11-23 15:20:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:21,258 INFO L495 AbstractCegarLoop]: Abstraction has 28653 states and 40335 transitions. [2022-11-23 15:20:21,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 15:20:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 28653 states and 40335 transitions. [2022-11-23 15:20:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-23 15:20:21,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:21,264 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 4, 4, 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] [2022-11-23 15:20:21,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 15:20:21,265 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1043223375, now seen corresponding path program 1 times [2022-11-23 15:20:21,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:21,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299163421] [2022-11-23 15:20:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:21,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2022-11-23 15:20:21,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:21,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299163421] [2022-11-23 15:20:21,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299163421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:21,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:21,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:20:21,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268633809] [2022-11-23 15:20:21,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:21,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:21,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:21,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:21,940 INFO L87 Difference]: Start difference. First operand 28653 states and 40335 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 15:20:25,073 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 [] [2022-11-23 15:20:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:29,205 INFO L93 Difference]: Finished difference Result 28667 states and 40346 transitions. [2022-11-23 15:20:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 252 [2022-11-23 15:20:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:29,325 INFO L225 Difference]: With dead ends: 28667 [2022-11-23 15:20:29,326 INFO L226 Difference]: Without dead ends: 28663 [2022-11-23 15:20:29,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:20:29,341 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 2684 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:29,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 8757 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 15:20:29,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28663 states. [2022-11-23 15:20:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28663 to 28659. [2022-11-23 15:20:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28659 states, 16941 states have (on average 1.308836550380733) internal successors, (22173), 17661 states have internal predecessors, (22173), 8942 states have call successors, (8942), 2862 states have call predecessors, (8942), 2773 states have return successors, (9224), 8342 states have call predecessors, (9224), 8934 states have call successors, (9224) [2022-11-23 15:20:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28659 states to 28659 states and 40339 transitions. [2022-11-23 15:20:32,190 INFO L78 Accepts]: Start accepts. Automaton has 28659 states and 40339 transitions. Word has length 252 [2022-11-23 15:20:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:32,191 INFO L495 AbstractCegarLoop]: Abstraction has 28659 states and 40339 transitions. [2022-11-23 15:20:32,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 15:20:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 28659 states and 40339 transitions. [2022-11-23 15:20:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-23 15:20:32,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:32,201 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 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] [2022-11-23 15:20:32,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 15:20:32,201 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1124363855, now seen corresponding path program 1 times [2022-11-23 15:20:32,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:32,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982647490] [2022-11-23 15:20:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:32,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat