./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-dec-tulip-uli526x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/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_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/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_243ace06-09aa-4b85-a856-3fe602248bcd/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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- 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 15:29:42,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:29:42,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:29:42,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:29:42,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:29:42,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:29:42,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:29:42,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:29:42,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:29:42,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:29:42,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:29:42,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:29:42,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:29:42,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:29:42,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:29:42,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:29:42,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:29:42,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:29:42,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:29:42,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:29:42,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:29:42,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:29:42,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:29:42,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:29:42,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:29:42,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:29:42,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:29:42,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:29:42,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:29:42,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:29:42,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:29:42,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:29:42,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:29:42,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:29:42,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:29:42,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:29:42,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:29:42,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:29:42,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:29:42,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:29:42,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:29:42,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:29:42,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:29:42,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:29:42,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:29:42,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:29:42,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:29:42,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:29:42,640 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:29:42,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:29:42,641 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:29:42,641 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:29:42,642 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:29:42,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:29:42,643 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:29:42,643 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:29:42,643 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:29:42,643 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:29:42,643 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:29:42,644 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:29:42,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:29:42,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:29:42,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:29:42,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:29:42,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:29:42,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:29:42,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:29:42,646 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:29:42,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:29:42,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:29:42,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:29:42,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:29:42,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:29:42,647 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:29:42,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:29:42,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:29:42,648 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:29:42,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:29:42,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:29:42,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:29:42,649 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_243ace06-09aa-4b85-a856-3fe602248bcd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2022-11-23 15:29:42,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:29:42,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:29:42,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:29:42,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:29:42,944 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:29:42,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-23 15:29:46,056 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:29:46,741 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:29:46,742 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-23 15:29:46,808 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/data/c793b4e29/e2f4d953492040659eb837d31095fb82/FLAG0e8d06ffb [2022-11-23 15:29:46,826 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/data/c793b4e29/e2f4d953492040659eb837d31095fb82 [2022-11-23 15:29:46,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:29:46,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:29:46,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:29:46,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:29:46,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:29:46,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:46" (1/1) ... [2022-11-23 15:29:46,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580afef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:46, skipping insertion in model container [2022-11-23 15:29:46,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:46" (1/1) ... [2022-11-23 15:29:46,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:29:47,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:29:49,482 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_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-23 15:29:49,486 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_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-23 15:29:49,487 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_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-23 15:29:49,487 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_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-23 15:29:49,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:29:49,593 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:29:50,070 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_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-23 15:29:50,071 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_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-23 15:29:50,071 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_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-23 15:29:50,072 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_243ace06-09aa-4b85-a856-3fe602248bcd/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-23 15:29:50,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:29:50,308 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:29:50,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50 WrapperNode [2022-11-23 15:29:50,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:29:50,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:29:50,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:29:50,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:29:50,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,656 INFO L138 Inliner]: procedures = 412, calls = 1674, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4057 [2022-11-23 15:29:50,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:29:50,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:29:50,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:29:50,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:29:50,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:29:50,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:29:50,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:29:50,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:29:50,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (1/1) ... [2022-11-23 15:29:50,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:29:50,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:50,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:29:51,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243ace06-09aa-4b85-a856-3fe602248bcd/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:29:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 15:29:51,048 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 15:29:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:29:51,049 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:29:51,049 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 15:29:51,049 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 15:29:51,049 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:29:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:29:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:29:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:29:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:29:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:29:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:29:51,051 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:29:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-23 15:29:51,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-23 15:29:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-23 15:29:51,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-23 15:29:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 15:29:51,054 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 15:29:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-23 15:29:51,055 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-23 15:29:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_poll [2022-11-23 15:29:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_poll [2022-11-23 15:29:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:29:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:29:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:29:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:29:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:29:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-23 15:29:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-23 15:29:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:29:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:29:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:29:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:29:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-23 15:29:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-23 15:29:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:29:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_stop [2022-11-23 15:29:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_stop [2022-11-23 15:29:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:29:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:29:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:29:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:29:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:29:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:29:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:29:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:29:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_set_filter_mode [2022-11-23 15:29:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_set_filter_mode [2022-11-23 15:29:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2022-11-23 15:29:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2022-11-23 15:29:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:29:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2022-11-23 15:29:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2022-11-23 15:29:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:29:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:29:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:29:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:29:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 15:29:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 15:29:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 15:29:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 15:29:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 15:29:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 15:29:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 15:29:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 15:29:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:29:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:29:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2022-11-23 15:29:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2022-11-23 15:29:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:29:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:29:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reset_prepare [2022-11-23 15:29:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reset_prepare [2022-11-23 15:29:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:29:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 15:29:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 15:29:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 15:29:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 15:29:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:29:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2022-11-23 15:29:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2022-11-23 15:29:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:29:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:29:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:29:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:29:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:29:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:29:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:29:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 15:29:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 15:29:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:29:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:29:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 15:29:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 15:29:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 15:29:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 15:29:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-23 15:29:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-23 15:29:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:29:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:29:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reuse_skb [2022-11-23 15:29:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reuse_skb [2022-11-23 15:29:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_open [2022-11-23 15:29:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_open [2022-11-23 15:29:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:29:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:29:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:29:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:29:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:29:51,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:29:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:29:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:29:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_uli526x_board_info [2022-11-23 15:29:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_uli526x_board_info [2022-11-23 15:29:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 15:29:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 15:29:51,094 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 15:29:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 15:29:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-23 15:29:51,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-23 15:29:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:29:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:29:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 15:29:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 15:29:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2022-11-23 15:29:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2022-11-23 15:29:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2022-11-23 15:29:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2022-11-23 15:29:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 15:29:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 15:29:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:29:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 15:29:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 15:29:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:29:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 15:29:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 15:29:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:29:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:29:51,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:29:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:29:51,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:29:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_resume [2022-11-23 15:29:51,099 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_resume [2022-11-23 15:29:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:29:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:29:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_interrupt [2022-11-23 15:29:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_interrupt [2022-11-23 15:29:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2022-11-23 15:29:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2022-11-23 15:29:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_remove_one [2022-11-23 15:29:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_remove_one [2022-11-23 15:29:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2022-11-23 15:29:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2022-11-23 15:29:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:29:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:29:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:29:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2022-11-23 15:29:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2022-11-23 15:29:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_free_rxbuffer [2022-11-23 15:29:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_free_rxbuffer [2022-11-23 15:29:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:29:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:29:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 15:29:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 15:29:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 15:29:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 15:29:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_init [2022-11-23 15:29:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_init [2022-11-23 15:29:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:29:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:29:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:29:51,884 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:29:51,887 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:29:52,552 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:29:55,176 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 15:29:55,427 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:29:56,774 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:29:56,774 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:29:56,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:56 BoogieIcfgContainer [2022-11-23 15:29:56,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:29:56,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:29:56,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:29:56,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:29:56,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:29:46" (1/3) ... [2022-11-23 15:29:56,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95623c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:56, skipping insertion in model container [2022-11-23 15:29:56,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50" (2/3) ... [2022-11-23 15:29:56,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95623c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:56, skipping insertion in model container [2022-11-23 15:29:56,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:56" (3/3) ... [2022-11-23 15:29:56,787 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-23 15:29:56,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:29:56,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 15:29:56,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:29:56,887 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;@1ce68e74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:29:56,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 15:29:56,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 596 states have (on average 1.2953020134228188) internal successors, (772), 619 states have internal predecessors, (772), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) [2022-11-23 15:29:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 15:29:56,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:56,913 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:56,914 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 15:29:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:56,919 INFO L85 PathProgramCache]: Analyzing trace with hash -360122654, now seen corresponding path program 1 times [2022-11-23 15:29:56,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:56,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940590280] [2022-11-23 15:29:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-23 15:29:57,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:57,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940590280] [2022-11-23 15:29:57,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940590280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:57,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:57,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:29:57,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106488093] [2022-11-23 15:29:57,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:57,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:57,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:57,839 INFO L87 Difference]: Start difference. First operand has 1067 states, 596 states have (on average 1.2953020134228188) internal successors, (772), 619 states have internal predecessors, (772), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:30:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:00,451 INFO L93 Difference]: Finished difference Result 3082 states and 4527 transitions. [2022-11-23 15:30:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:30:00,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-23 15:30:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:00,483 INFO L225 Difference]: With dead ends: 3082 [2022-11-23 15:30:00,483 INFO L226 Difference]: Without dead ends: 2024 [2022-11-23 15:30:00,497 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 15:30:00,500 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1427 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:00,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 2936 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 15:30:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2022-11-23 15:30:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2022-11-23 15:30:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1139 states have (on average 1.2853380158033363) internal successors, (1464), 1184 states have internal predecessors, (1464), 726 states have call successors, (726), 153 states have call predecessors, (726), 152 states have return successors, (722), 710 states have call predecessors, (722), 722 states have call successors, (722) [2022-11-23 15:30:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2912 transitions. [2022-11-23 15:30:00,788 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2912 transitions. Word has length 111 [2022-11-23 15:30:00,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:00,789 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2912 transitions. [2022-11-23 15:30:00,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:30:00,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2912 transitions. [2022-11-23 15:30:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:30:00,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:00,802 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:00,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:30:00,803 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 15:30:00,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1145499243, now seen corresponding path program 1 times [2022-11-23 15:30:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:00,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159786759] [2022-11-23 15:30:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:00,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-23 15:30:01,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:01,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159786759] [2022-11-23 15:30:01,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159786759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:01,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:01,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:30:01,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594422177] [2022-11-23 15:30:01,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:01,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:30:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:01,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:30:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:30:01,186 INFO L87 Difference]: Start difference. First operand 2020 states and 2912 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:30:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:03,589 INFO L93 Difference]: Finished difference Result 5958 states and 8596 transitions. [2022-11-23 15:30:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:30:03,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-23 15:30:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:03,617 INFO L225 Difference]: With dead ends: 5958 [2022-11-23 15:30:03,617 INFO L226 Difference]: Without dead ends: 3957 [2022-11-23 15:30:03,628 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 15:30:03,629 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1470 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:03,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 2932 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 15:30:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-11-23 15:30:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3927. [2022-11-23 15:30:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 2228 states have (on average 1.2885996409335727) internal successors, (2871), 2322 states have internal predecessors, (2871), 1397 states have call successors, (1397), 304 states have call predecessors, (1397), 299 states have return successors, (1399), 1356 states have call predecessors, (1399), 1393 states have call successors, (1399) [2022-11-23 15:30:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5667 transitions. [2022-11-23 15:30:04,070 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5667 transitions. Word has length 115 [2022-11-23 15:30:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:04,071 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 5667 transitions. [2022-11-23 15:30:04,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:30:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5667 transitions. [2022-11-23 15:30:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:30:04,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:04,082 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:04,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:30:04,082 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 15:30:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2114943247, now seen corresponding path program 1 times [2022-11-23 15:30:04,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:04,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096779802] [2022-11-23 15:30:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:04,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-23 15:30:04,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096779802] [2022-11-23 15:30:04,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096779802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:04,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:04,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:30:04,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287082516] [2022-11-23 15:30:04,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:04,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:30:04,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:04,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:30:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:30:04,401 INFO L87 Difference]: Start difference. First operand 3927 states and 5667 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:30:07,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:07,115 INFO L93 Difference]: Finished difference Result 11395 states and 16413 transitions. [2022-11-23 15:30:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:30:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-23 15:30:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:07,177 INFO L225 Difference]: With dead ends: 11395 [2022-11-23 15:30:07,177 INFO L226 Difference]: Without dead ends: 7487 [2022-11-23 15:30:07,201 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 15:30:07,204 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 1380 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:07,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 2901 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 15:30:07,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7487 states. [2022-11-23 15:30:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7487 to 7453. [2022-11-23 15:30:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 4238 states have (on average 1.2890514393581878) internal successors, (5463), 4424 states have internal predecessors, (5463), 2627 states have call successors, (2627), 598 states have call predecessors, (2627), 585 states have return successors, (2637), 2538 states have call predecessors, (2637), 2623 states have call successors, (2637) [2022-11-23 15:30:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 10727 transitions. [2022-11-23 15:30:07,723 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 10727 transitions. Word has length 115 [2022-11-23 15:30:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:07,724 INFO L495 AbstractCegarLoop]: Abstraction has 7453 states and 10727 transitions. [2022-11-23 15:30:07,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:30:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 10727 transitions. [2022-11-23 15:30:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 15:30:07,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:07,727 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:07,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:30:07,728 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 15:30:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -862752255, now seen corresponding path program 1 times [2022-11-23 15:30:07,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:07,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130759092] [2022-11-23 15:30:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:07,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-23 15:30:08,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:08,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130759092] [2022-11-23 15:30:08,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130759092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:08,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:08,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:30:08,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914506276] [2022-11-23 15:30:08,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:08,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:30:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:30:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:30:08,373 INFO L87 Difference]: Start difference. First operand 7453 states and 10727 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:30:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:14,770 INFO L93 Difference]: Finished difference Result 16965 states and 24267 transitions. [2022-11-23 15:30:14,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:30:14,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2022-11-23 15:30:14,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:14,844 INFO L225 Difference]: With dead ends: 16965 [2022-11-23 15:30:14,847 INFO L226 Difference]: Without dead ends: 9531 [2022-11-23 15:30:14,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:30:14,884 INFO L413 NwaCegarLoop]: 1888 mSDtfsCounter, 2658 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 4731 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:14,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2735 Valid, 4731 Invalid, 2258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 15:30:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9531 states. [2022-11-23 15:30:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9531 to 9459. [2022-11-23 15:30:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 5567 states have (on average 1.2927968385126638) internal successors, (7197), 5795 states have internal predecessors, (7197), 3090 states have call successors, (3090), 820 states have call predecessors, (3090), 799 states have return successors, (3093), 2963 states have call predecessors, (3093), 3086 states have call successors, (3093) [2022-11-23 15:30:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13380 transitions. [2022-11-23 15:30:15,719 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13380 transitions. Word has length 118 [2022-11-23 15:30:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:15,721 INFO L495 AbstractCegarLoop]: Abstraction has 9459 states and 13380 transitions. [2022-11-23 15:30:15,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:30:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13380 transitions. [2022-11-23 15:30:15,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 15:30:15,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:15,726 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:15,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:30:15,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:30:15,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1656430772, now seen corresponding path program 1 times [2022-11-23 15:30:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:15,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180447893] [2022-11-23 15:30:15,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:15,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-23 15:30:15,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:15,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180447893] [2022-11-23 15:30:15,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180447893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:15,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:15,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:30:15,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606010222] [2022-11-23 15:30:15,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:15,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:30:15,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:15,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:30:15,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:30:15,988 INFO L87 Difference]: Start difference. First operand 9459 states and 13380 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:30:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:18,956 INFO L93 Difference]: Finished difference Result 24861 states and 35112 transitions. [2022-11-23 15:30:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:30:18,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2022-11-23 15:30:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:19,076 INFO L225 Difference]: With dead ends: 24861 [2022-11-23 15:30:19,076 INFO L226 Difference]: Without dead ends: 15421 [2022-11-23 15:30:19,127 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 15:30:19,128 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1337 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:19,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 2894 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 15:30:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15421 states. [2022-11-23 15:30:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15421 to 15389. [2022-11-23 15:30:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 8959 states have (on average 1.2782676638017636) internal successors, (11452), 9331 states have internal predecessors, (11452), 5093 states have call successors, (5093), 1377 states have call predecessors, (5093), 1334 states have return successors, (5104), 4859 states have call predecessors, (5104), 5089 states have call successors, (5104) [2022-11-23 15:30:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 21649 transitions. [2022-11-23 15:30:20,354 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 21649 transitions. Word has length 121 [2022-11-23 15:30:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:20,356 INFO L495 AbstractCegarLoop]: Abstraction has 15389 states and 21649 transitions. [2022-11-23 15:30:20,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:30:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 21649 transitions. [2022-11-23 15:30:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-23 15:30:20,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:20,360 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:20,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:30:20,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:30:20,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:20,361 INFO L85 PathProgramCache]: Analyzing trace with hash -649617697, now seen corresponding path program 1 times [2022-11-23 15:30:20,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:20,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380425371] [2022-11-23 15:30:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:20,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-23 15:30:20,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:20,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380425371] [2022-11-23 15:30:20,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380425371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:20,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:20,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:30:20,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449285087] [2022-11-23 15:30:20,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:20,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:30:20,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:20,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:30:20,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:30:20,595 INFO L87 Difference]: Start difference. First operand 15389 states and 21649 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 15:30:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:24,413 INFO L93 Difference]: Finished difference Result 45249 states and 63699 transitions. [2022-11-23 15:30:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:30:24,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-11-23 15:30:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:24,655 INFO L225 Difference]: With dead ends: 45249 [2022-11-23 15:30:24,655 INFO L226 Difference]: Without dead ends: 29879 [2022-11-23 15:30:24,750 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 15:30:24,752 INFO L413 NwaCegarLoop]: 1751 mSDtfsCounter, 1477 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:24,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 3046 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 15:30:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29879 states. [2022-11-23 15:30:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29879 to 29805. [2022-11-23 15:30:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29805 states, 17331 states have (on average 1.2785759621487507) internal successors, (22159), 18097 states have internal predecessors, (22159), 9880 states have call successors, (9880), 2676 states have call predecessors, (9880), 2591 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:30:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29805 states to 29805 states and 41945 transitions. [2022-11-23 15:30:26,925 INFO L78 Accepts]: Start accepts. Automaton has 29805 states and 41945 transitions. Word has length 133 [2022-11-23 15:30:26,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:26,926 INFO L495 AbstractCegarLoop]: Abstraction has 29805 states and 41945 transitions. [2022-11-23 15:30:26,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 15:30:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 29805 states and 41945 transitions. [2022-11-23 15:30:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 15:30:26,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:26,930 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 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] [2022-11-23 15:30:26,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:30:26,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:30:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:26,931 INFO L85 PathProgramCache]: Analyzing trace with hash -8498613, now seen corresponding path program 1 times [2022-11-23 15:30:26,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:26,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135105751] [2022-11-23 15:30:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:26,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-23 15:30:27,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:27,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135105751] [2022-11-23 15:30:27,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135105751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:27,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:27,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:30:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017097794] [2022-11-23 15:30:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:27,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:30:27,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:30:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:30:27,185 INFO L87 Difference]: Start difference. First operand 29805 states and 41945 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 15:30:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:30,555 INFO L93 Difference]: Finished difference Result 59497 states and 83762 transitions. [2022-11-23 15:30:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:30:30,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2022-11-23 15:30:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:30,853 INFO L225 Difference]: With dead ends: 59497 [2022-11-23 15:30:30,853 INFO L226 Difference]: Without dead ends: 29757 [2022-11-23 15:30:30,966 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 15:30:30,967 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 1485 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:30,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1289 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 15:30:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29757 states. [2022-11-23 15:30:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29757 to 29757. [2022-11-23 15:30:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29757 states, 17283 states have (on average 1.2682404675114274) internal successors, (21919), 18049 states have internal predecessors, (21919), 9880 states have call successors, (9880), 2676 states have call predecessors, (9880), 2591 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:30:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29757 states to 29757 states and 41705 transitions. [2022-11-23 15:30:33,508 INFO L78 Accepts]: Start accepts. Automaton has 29757 states and 41705 transitions. Word has length 156 [2022-11-23 15:30:33,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:33,509 INFO L495 AbstractCegarLoop]: Abstraction has 29757 states and 41705 transitions. [2022-11-23 15:30:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 15:30:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 29757 states and 41705 transitions. [2022-11-23 15:30:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-23 15:30:33,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:33,513 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 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] [2022-11-23 15:30:33,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:30:33,513 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 15:30:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1474495195, now seen corresponding path program 1 times [2022-11-23 15:30:33,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:33,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298728650] [2022-11-23 15:30:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-23 15:30:34,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:34,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298728650] [2022-11-23 15:30:34,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298728650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:34,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:34,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:30:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382619629] [2022-11-23 15:30:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:34,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:30:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:30:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:30:34,298 INFO L87 Difference]: Start difference. First operand 29757 states and 41705 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:30:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:38,043 INFO L93 Difference]: Finished difference Result 29763 states and 41710 transitions. [2022-11-23 15:30:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:30:38,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2022-11-23 15:30:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:38,189 INFO L225 Difference]: With dead ends: 29763 [2022-11-23 15:30:38,189 INFO L226 Difference]: Without dead ends: 29761 [2022-11-23 15:30:38,206 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 15:30:38,208 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 1463 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:38,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 3853 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 15:30:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29761 states. [2022-11-23 15:30:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29761 to 29761. [2022-11-23 15:30:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29761 states, 17286 states have (on average 1.2681939141501792) internal successors, (21922), 18052 states have internal predecessors, (21922), 9880 states have call successors, (9880), 2677 states have call predecessors, (9880), 2592 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:30:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29761 states to 29761 states and 41708 transitions. [2022-11-23 15:30:40,288 INFO L78 Accepts]: Start accepts. Automaton has 29761 states and 41708 transitions. Word has length 158 [2022-11-23 15:30:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:40,288 INFO L495 AbstractCegarLoop]: Abstraction has 29761 states and 41708 transitions. [2022-11-23 15:30:40,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:30:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 29761 states and 41708 transitions. [2022-11-23 15:30:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-23 15:30:40,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:40,293 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 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] [2022-11-23 15:30:40,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:30:40,293 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 15:30:40,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash 270290293, now seen corresponding path program 1 times [2022-11-23 15:30:40,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:40,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413003244] [2022-11-23 15:30:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:40,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-23 15:30:40,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:40,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413003244] [2022-11-23 15:30:40,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413003244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:40,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:40,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:30:40,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340221122] [2022-11-23 15:30:40,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:40,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:30:40,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:40,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:30:40,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:30:40,978 INFO L87 Difference]: Start difference. First operand 29761 states and 41708 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 15:30:44,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:44,659 INFO L93 Difference]: Finished difference Result 29767 states and 41713 transitions. [2022-11-23 15:30:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:30:44,660 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2022-11-23 15:30:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:44,792 INFO L225 Difference]: With dead ends: 29767 [2022-11-23 15:30:44,793 INFO L226 Difference]: Without dead ends: 29765 [2022-11-23 15:30:44,809 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 15:30:44,809 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1457 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:44,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 3856 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 15:30:44,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29765 states. [2022-11-23 15:30:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29765 to 29765. [2022-11-23 15:30:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29765 states, 17289 states have (on average 1.2681473769448783) internal successors, (21925), 18055 states have internal predecessors, (21925), 9880 states have call successors, (9880), 2678 states have call predecessors, (9880), 2593 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:30:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29765 states to 29765 states and 41711 transitions. [2022-11-23 15:30:46,884 INFO L78 Accepts]: Start accepts. Automaton has 29765 states and 41711 transitions. Word has length 166 [2022-11-23 15:30:46,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:46,885 INFO L495 AbstractCegarLoop]: Abstraction has 29765 states and 41711 transitions. [2022-11-23 15:30:46,885 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 15:30:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 29765 states and 41711 transitions. [2022-11-23 15:30:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-23 15:30:46,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:46,893 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 3, 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] [2022-11-23 15:30:46,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:30:46,893 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 15:30:46,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1310418234, now seen corresponding path program 1 times [2022-11-23 15:30:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:46,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801939284] [2022-11-23 15:30:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:46,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-11-23 15:30:47,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:47,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801939284] [2022-11-23 15:30:47,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801939284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:47,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:47,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:30:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288886342] [2022-11-23 15:30:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:47,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:30:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:47,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:30:47,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:30:47,467 INFO L87 Difference]: Start difference. First operand 29765 states and 41711 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 15:30:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:51,942 INFO L93 Difference]: Finished difference Result 29771 states and 41716 transitions. [2022-11-23 15:30:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:30:51,943 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 172 [2022-11-23 15:30:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:52,062 INFO L225 Difference]: With dead ends: 29771 [2022-11-23 15:30:52,062 INFO L226 Difference]: Without dead ends: 29769 [2022-11-23 15:30:52,077 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 15:30:52,077 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1457 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:52,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 3856 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 15:30:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29769 states. [2022-11-23 15:30:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29769 to 29769. [2022-11-23 15:30:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29769 states, 17292 states have (on average 1.2681008558871154) internal successors, (21928), 18058 states have internal predecessors, (21928), 9880 states have call successors, (9880), 2679 states have call predecessors, (9880), 2594 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:30:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29769 states to 29769 states and 41714 transitions. [2022-11-23 15:30:54,101 INFO L78 Accepts]: Start accepts. Automaton has 29769 states and 41714 transitions. Word has length 172 [2022-11-23 15:30:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:54,102 INFO L495 AbstractCegarLoop]: Abstraction has 29769 states and 41714 transitions. [2022-11-23 15:30:54,102 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 15:30:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 29769 states and 41714 transitions. [2022-11-23 15:30:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-23 15:30:54,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:54,106 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:54,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:30:54,107 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 15:30:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1820995875, now seen corresponding path program 1 times [2022-11-23 15:30:54,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:54,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747487083] [2022-11-23 15:30:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:54,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2022-11-23 15:30:54,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:54,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747487083] [2022-11-23 15:30:54,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747487083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:54,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:54,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:30:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441643556] [2022-11-23 15:30:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:54,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:30:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:30:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:30:54,483 INFO L87 Difference]: Start difference. First operand 29769 states and 41714 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 15:30:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:58,229 INFO L93 Difference]: Finished difference Result 29775 states and 41719 transitions. [2022-11-23 15:30:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:30:58,230 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 177 [2022-11-23 15:30:58,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:58,372 INFO L225 Difference]: With dead ends: 29775 [2022-11-23 15:30:58,373 INFO L226 Difference]: Without dead ends: 29773 [2022-11-23 15:30:58,387 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 15:30:58,387 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1457 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:58,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 3856 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 15:30:58,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29773 states. [2022-11-23 15:31:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29773 to 29773. [2022-11-23 15:31:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29773 states, 17295 states have (on average 1.268054350968488) internal successors, (21931), 18061 states have internal predecessors, (21931), 9880 states have call successors, (9880), 2680 states have call predecessors, (9880), 2595 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:31:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29773 states to 29773 states and 41717 transitions. [2022-11-23 15:31:00,552 INFO L78 Accepts]: Start accepts. Automaton has 29773 states and 41717 transitions. Word has length 177 [2022-11-23 15:31:00,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:31:00,553 INFO L495 AbstractCegarLoop]: Abstraction has 29773 states and 41717 transitions. [2022-11-23 15:31:00,553 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 15:31:00,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29773 states and 41717 transitions. [2022-11-23 15:31:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-23 15:31:00,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:31:00,558 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 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] [2022-11-23 15:31:00,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:31:00,558 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 15:31:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:31:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1367358958, now seen corresponding path program 1 times [2022-11-23 15:31:00,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:31:00,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287680819] [2022-11-23 15:31:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:31:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:31:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2022-11-23 15:31:00,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:31:00,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287680819] [2022-11-23 15:31:00,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287680819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:31:00,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:31:00,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:31:00,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863879601] [2022-11-23 15:31:00,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:31:00,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:31:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:31:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:31:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:31:00,920 INFO L87 Difference]: Start difference. First operand 29773 states and 41717 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, (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 15:31:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:31:04,642 INFO L93 Difference]: Finished difference Result 29779 states and 41722 transitions. [2022-11-23 15:31:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:31:04,643 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, (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 181 [2022-11-23 15:31:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:31:04,738 INFO L225 Difference]: With dead ends: 29779 [2022-11-23 15:31:04,738 INFO L226 Difference]: Without dead ends: 29777 [2022-11-23 15:31:04,751 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 15:31:04,752 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1457 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:31:04,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 3856 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 15:31:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29777 states. [2022-11-23 15:31:06,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29777 to 29777. [2022-11-23 15:31:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29777 states, 17298 states have (on average 1.268007862180599) internal successors, (21934), 18064 states have internal predecessors, (21934), 9880 states have call successors, (9880), 2681 states have call predecessors, (9880), 2596 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:31:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29777 states to 29777 states and 41720 transitions. [2022-11-23 15:31:06,690 INFO L78 Accepts]: Start accepts. Automaton has 29777 states and 41720 transitions. Word has length 181 [2022-11-23 15:31:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:31:06,690 INFO L495 AbstractCegarLoop]: Abstraction has 29777 states and 41720 transitions. [2022-11-23 15:31:06,691 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, (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 15:31:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 29777 states and 41720 transitions. [2022-11-23 15:31:06,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-23 15:31:06,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:31:06,695 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 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] [2022-11-23 15:31:06,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:31:06,695 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 15:31:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:31:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1371093955, now seen corresponding path program 1 times [2022-11-23 15:31:06,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:31:06,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990561347] [2022-11-23 15:31:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:31:06,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:31:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-23 15:31:07,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:31:07,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990561347] [2022-11-23 15:31:07,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990561347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:31:07,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:31:07,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:31:07,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898837198] [2022-11-23 15:31:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:31:07,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:31:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:31:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:31:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:31:07,077 INFO L87 Difference]: Start difference. First operand 29777 states and 41720 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 15:31:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:31:11,170 INFO L93 Difference]: Finished difference Result 29783 states and 41725 transitions. [2022-11-23 15:31:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:31:11,171 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 187 [2022-11-23 15:31:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:31:11,297 INFO L225 Difference]: With dead ends: 29783 [2022-11-23 15:31:11,297 INFO L226 Difference]: Without dead ends: 29781 [2022-11-23 15:31:11,309 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 15:31:11,310 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1457 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:31:11,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 3856 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 15:31:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29781 states. [2022-11-23 15:31:13,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29781 to 29781. [2022-11-23 15:31:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29781 states, 17301 states have (on average 1.267961389515057) internal successors, (21937), 18067 states have internal predecessors, (21937), 9880 states have call successors, (9880), 2682 states have call predecessors, (9880), 2597 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:31:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29781 states to 29781 states and 41723 transitions. [2022-11-23 15:31:13,293 INFO L78 Accepts]: Start accepts. Automaton has 29781 states and 41723 transitions. Word has length 187 [2022-11-23 15:31:13,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:31:13,293 INFO L495 AbstractCegarLoop]: Abstraction has 29781 states and 41723 transitions. [2022-11-23 15:31:13,294 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 15:31:13,294 INFO L276 IsEmpty]: Start isEmpty. Operand 29781 states and 41723 transitions. [2022-11-23 15:31:13,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-23 15:31:13,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:31:13,298 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 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] [2022-11-23 15:31:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:31:13,299 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 15:31:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:31:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2030076091, now seen corresponding path program 1 times [2022-11-23 15:31:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:31:13,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044923910] [2022-11-23 15:31:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:31:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:31:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-23 15:31:13,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:31:13,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044923910] [2022-11-23 15:31:13,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044923910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:31:13,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:31:13,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:31:13,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223704159] [2022-11-23 15:31:13,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:31:13,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:31:13,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:31:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:31:13,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:31:13,658 INFO L87 Difference]: Start difference. First operand 29781 states and 41723 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 15:31:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:31:17,950 INFO L93 Difference]: Finished difference Result 29787 states and 41728 transitions. [2022-11-23 15:31:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:31:17,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 188 [2022-11-23 15:31:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:31:18,055 INFO L225 Difference]: With dead ends: 29787 [2022-11-23 15:31:18,055 INFO L226 Difference]: Without dead ends: 29785 [2022-11-23 15:31:18,067 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 15:31:18,068 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1458 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:31:18,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 3856 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 15:31:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29785 states. [2022-11-23 15:31:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29785 to 29785. [2022-11-23 15:31:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29785 states, 17304 states have (on average 1.2679149329634767) internal successors, (21940), 18070 states have internal predecessors, (21940), 9880 states have call successors, (9880), 2683 states have call predecessors, (9880), 2598 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-23 15:31:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29785 states to 29785 states and 41726 transitions. [2022-11-23 15:31:20,176 INFO L78 Accepts]: Start accepts. Automaton has 29785 states and 41726 transitions. Word has length 188 [2022-11-23 15:31:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:31:20,176 INFO L495 AbstractCegarLoop]: Abstraction has 29785 states and 41726 transitions. [2022-11-23 15:31:20,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 15:31:20,177 INFO L276 IsEmpty]: Start isEmpty. Operand 29785 states and 41726 transitions. [2022-11-23 15:31:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-23 15:31:20,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:31:20,183 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 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] [2022-11-23 15:31:20,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:31:20,183 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 15:31:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:31:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash -927645506, now seen corresponding path program 1 times [2022-11-23 15:31:20,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:31:20,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960629368] [2022-11-23 15:31:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:31:20,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:31:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2022-11-23 15:31:20,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:31:20,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960629368] [2022-11-23 15:31:20,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960629368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:31:20,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:31:20,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:31:20,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614409379] [2022-11-23 15:31:20,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:31:20,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:31:20,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:31:20,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:31:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:31:20,766 INFO L87 Difference]: Start difference. First operand 29785 states and 41726 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25)