./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/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_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7 --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 --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:51:28,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:51:28,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:51:28,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:51:28,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:51:28,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:51:28,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:51:28,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:51:28,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:51:28,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:51:28,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:51:28,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:51:28,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:51:28,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:51:28,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:51:28,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:51:28,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:51:28,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:51:28,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:51:28,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:51:28,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:51:28,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:51:28,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:51:28,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:51:28,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:51:28,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:51:28,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:51:28,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:51:28,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:51:28,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:51:28,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:51:28,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:51:28,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:51:28,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:51:28,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:51:28,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:51:28,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:51:28,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:51:28,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:51:28,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:51:28,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:51:28,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:51:28,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:51:28,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:51:28,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:51:28,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:51:28,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:51:28,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:51:28,465 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:51:28,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:51:28,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:51:28,467 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:51:28,467 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:51:28,467 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:51:28,468 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:51:28,468 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:51:28,468 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:51:28,469 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:51:28,469 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:51:28,470 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:51:28,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:51:28,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:51:28,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:51:28,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:51:28,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:51:28,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:51:28,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:51:28,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:51:28,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:51:28,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:51:28,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:51:28,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:51:28,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:51:28,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:51:28,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:51:28,476 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:51:28,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:51:28,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:51:28,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:51:28,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:51:28,477 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2021-11-25 18:51:28,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:51:28,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:51:28,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:51:28,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:51:28,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:51:28,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-25 18:51:28,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/data/3ef333100/42f12252e7b444598211100b3cd17db4/FLAG97d85ad30 [2021-11-25 18:51:29,994 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:51:29,995 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-25 18:51:30,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/data/3ef333100/42f12252e7b444598211100b3cd17db4/FLAG97d85ad30 [2021-11-25 18:51:30,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/data/3ef333100/42f12252e7b444598211100b3cd17db4 [2021-11-25 18:51:30,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:51:30,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:51:30,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:51:30,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:51:30,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:51:30,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:51:30" (1/1) ... [2021-11-25 18:51:30,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9c4fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:30, skipping insertion in model container [2021-11-25 18:51:30,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:51:30" (1/1) ... [2021-11-25 18:51:30,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:51:30,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:51:33,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-25 18:51:33,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-25 18:51:33,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-25 18:51:33,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-25 18:51:33,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:51:33,305 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:51:33,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-25 18:51:33,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-25 18:51:33,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-25 18:51:33,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-25 18:51:33,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:51:33,963 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:51:33,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33 WrapperNode [2021-11-25 18:51:33,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:51:33,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:51:33,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:51:33,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:51:33,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,303 INFO L137 Inliner]: procedures = 412, calls = 1642, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4077 [2021-11-25 18:51:34,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:51:34,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:51:34,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:51:34,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:51:34,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:51:34,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:51:34,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:51:34,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:51:34,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (1/1) ... [2021-11-25 18:51:34,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:51:34,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:34,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:51:34,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ecec65c-af77-4a69-8a99-5c1f5388069e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:51:34,694 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 18:51:34,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 18:51:34,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:51:34,695 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:51:34,695 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 18:51:34,695 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 18:51:34,695 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:51:34,696 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:51:34,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:51:34,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:51:34,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:51:34,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:51:34,697 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:51:34,697 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:51:34,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2021-11-25 18:51:34,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2021-11-25 18:51:34,697 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-25 18:51:34,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-25 18:51:34,698 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:51:34,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:51:34,698 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2021-11-25 18:51:34,698 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2021-11-25 18:51:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_poll [2021-11-25 18:51:34,699 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_poll [2021-11-25 18:51:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:51:34,699 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:51:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:51:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:51:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:51:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:51:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 18:51:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 18:51:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:51:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:51:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:51:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:51:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 18:51:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 18:51:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:51:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_stop [2021-11-25 18:51:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_stop [2021-11-25 18:51:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:51:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:51:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:51:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:51:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:51:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:51:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:51:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:51:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_set_filter_mode [2021-11-25 18:51:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_set_filter_mode [2021-11-25 18:51:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2021-11-25 18:51:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2021-11-25 18:51:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:51:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2021-11-25 18:51:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2021-11-25 18:51:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:51:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:51:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:51:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:51:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:51:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:51:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:51:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:51:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:51:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:51:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 18:51:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 18:51:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:51:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:51:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2021-11-25 18:51:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2021-11-25 18:51:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:51:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:51:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reset_prepare [2021-11-25 18:51:34,711 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reset_prepare [2021-11-25 18:51:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:51:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:51:34,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:51:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:51:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:51:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:51:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2021-11-25 18:51:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2021-11-25 18:51:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:51:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:51:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:51:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:51:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:51:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:51:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:51:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:51:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:51:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:51:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:51:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 18:51:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 18:51:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:51:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:51:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-25 18:51:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-25 18:51:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:51:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:51:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reuse_skb [2021-11-25 18:51:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reuse_skb [2021-11-25 18:51:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_open [2021-11-25 18:51:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_open [2021-11-25 18:51:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:51:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:51:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:51:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:51:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:51:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:51:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:51:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:51:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_uli526x_board_info [2021-11-25 18:51:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_uli526x_board_info [2021-11-25 18:51:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:51:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:51:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 18:51:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 18:51:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 18:51:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 18:51:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:51:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:51:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 18:51:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 18:51:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2021-11-25 18:51:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2021-11-25 18:51:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2021-11-25 18:51:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2021-11-25 18:51:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:51:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:51:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:51:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:51:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:51:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:51:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 18:51:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 18:51:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:51:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:51:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:51:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:51:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:51:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_resume [2021-11-25 18:51:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_resume [2021-11-25 18:51:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:51:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:51:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_interrupt [2021-11-25 18:51:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_interrupt [2021-11-25 18:51:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2021-11-25 18:51:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2021-11-25 18:51:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_remove_one [2021-11-25 18:51:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_remove_one [2021-11-25 18:51:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2021-11-25 18:51:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2021-11-25 18:51:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:51:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:51:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:51:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2021-11-25 18:51:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2021-11-25 18:51:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_free_rxbuffer [2021-11-25 18:51:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_free_rxbuffer [2021-11-25 18:51:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:51:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:51:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 18:51:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 18:51:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:51:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:51:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_init [2021-11-25 18:51:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_init [2021-11-25 18:51:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:51:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:51:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:51:35,491 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:51:35,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:51:35,933 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:51:38,309 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:51:38,558 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:51:39,706 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:51:39,707 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:51:39,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:51:39 BoogieIcfgContainer [2021-11-25 18:51:39,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:51:39,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:51:39,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:51:39,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:51:39,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:51:30" (1/3) ... [2021-11-25 18:51:39,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b22c73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:51:39, skipping insertion in model container [2021-11-25 18:51:39,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:51:33" (2/3) ... [2021-11-25 18:51:39,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b22c73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:51:39, skipping insertion in model container [2021-11-25 18:51:39,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:51:39" (3/3) ... [2021-11-25 18:51:39,719 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-25 18:51:39,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:51:39,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:51:39,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:51:39,786 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:51:39,787 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:51:39,832 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) [2021-11-25 18:51:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 18:51:39,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:39,849 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:51:39,849 INFO L402 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)] === [2021-11-25 18:51:39,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash 827769766, now seen corresponding path program 1 times [2021-11-25 18:51:39,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:39,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964086676] [2021-11-25 18:51:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:39,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:51:40,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:40,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964086676] [2021-11-25 18:51:40,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964086676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:51:40,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:51:40,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:51:40,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812686087] [2021-11-25 18:51:40,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:51:40,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:51:40,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:51:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:51:40,595 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) [2021-11-25 18:51:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:43,050 INFO L93 Difference]: Finished difference Result 3082 states and 4527 transitions. [2021-11-25 18:51:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:51:43,052 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 [2021-11-25 18:51:43,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:43,086 INFO L225 Difference]: With dead ends: 3082 [2021-11-25 18:51:43,086 INFO L226 Difference]: Without dead ends: 2024 [2021-11-25 18:51:43,099 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:51:43,103 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1427 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:43,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 2918 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:51:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-25 18:51:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2021-11-25 18:51:43,372 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) [2021-11-25 18:51:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2912 transitions. [2021-11-25 18:51:43,402 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2912 transitions. Word has length 111 [2021-11-25 18:51:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:43,404 INFO L470 AbstractCegarLoop]: Abstraction has 2020 states and 2912 transitions. [2021-11-25 18:51:43,404 INFO L471 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) [2021-11-25 18:51:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2912 transitions. [2021-11-25 18:51:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 18:51:43,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:43,420 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:51:43,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:51:43,421 INFO L402 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)] === [2021-11-25 18:51:43,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash 669329599, now seen corresponding path program 1 times [2021-11-25 18:51:43,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:43,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878709678] [2021-11-25 18:51:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:43,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:51:43,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:43,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878709678] [2021-11-25 18:51:43,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878709678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:51:43,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:51:43,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:51:43,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629688764] [2021-11-25 18:51:43,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:51:43,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:51:43,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:51:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:51:43,692 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) [2021-11-25 18:51:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:45,734 INFO L93 Difference]: Finished difference Result 5958 states and 8596 transitions. [2021-11-25 18:51:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:51:45,735 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 [2021-11-25 18:51:45,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:45,778 INFO L225 Difference]: With dead ends: 5958 [2021-11-25 18:51:45,778 INFO L226 Difference]: Without dead ends: 3957 [2021-11-25 18:51:45,792 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:51:45,794 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 1470 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:45,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 2914 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 18:51:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2021-11-25 18:51:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3927. [2021-11-25 18:51:46,064 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) [2021-11-25 18:51:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5667 transitions. [2021-11-25 18:51:46,101 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5667 transitions. Word has length 115 [2021-11-25 18:51:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:46,102 INFO L470 AbstractCegarLoop]: Abstraction has 3927 states and 5667 transitions. [2021-11-25 18:51:46,102 INFO L471 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) [2021-11-25 18:51:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5667 transitions. [2021-11-25 18:51:46,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 18:51:46,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:46,105 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:51:46,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:51:46,106 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:51:46,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:46,107 INFO L85 PathProgramCache]: Analyzing trace with hash -310781110, now seen corresponding path program 1 times [2021-11-25 18:51:46,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:46,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627627728] [2021-11-25 18:51:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:46,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:51:46,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:46,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627627728] [2021-11-25 18:51:46,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627627728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:51:46,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:51:46,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:51:46,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154806107] [2021-11-25 18:51:46,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:51:46,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:51:46,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:51:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:51:46,329 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) [2021-11-25 18:51:48,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:48,706 INFO L93 Difference]: Finished difference Result 11395 states and 16413 transitions. [2021-11-25 18:51:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:51:48,706 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 [2021-11-25 18:51:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:48,786 INFO L225 Difference]: With dead ends: 11395 [2021-11-25 18:51:48,786 INFO L226 Difference]: Without dead ends: 7487 [2021-11-25 18:51:48,814 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:51:48,821 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1380 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:48,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 2955 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:51:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7487 states. [2021-11-25 18:51:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7487 to 7453. [2021-11-25 18:51:49,391 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) [2021-11-25 18:51:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 10727 transitions. [2021-11-25 18:51:49,444 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 10727 transitions. Word has length 115 [2021-11-25 18:51:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:49,446 INFO L470 AbstractCegarLoop]: Abstraction has 7453 states and 10727 transitions. [2021-11-25 18:51:49,447 INFO L471 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) [2021-11-25 18:51:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 10727 transitions. [2021-11-25 18:51:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 18:51:49,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:49,451 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:51:49,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:51:49,451 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:51:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1802176668, now seen corresponding path program 1 times [2021-11-25 18:51:49,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:49,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571733659] [2021-11-25 18:51:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:49,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:51:49,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:49,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571733659] [2021-11-25 18:51:49,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571733659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:51:49,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:51:49,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:51:49,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174932765] [2021-11-25 18:51:49,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:51:49,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:51:49,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:49,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:51:49,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:51:49,678 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) [2021-11-25 18:51:55,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:55,110 INFO L93 Difference]: Finished difference Result 16965 states and 24267 transitions. [2021-11-25 18:51:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:51:55,111 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 [2021-11-25 18:51:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:55,201 INFO L225 Difference]: With dead ends: 16965 [2021-11-25 18:51:55,202 INFO L226 Difference]: Without dead ends: 9531 [2021-11-25 18:51:55,244 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:51:55,248 INFO L933 BasicCegarLoop]: 1878 mSDtfsCounter, 2658 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:55,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 4689 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 18:51:55,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9531 states. [2021-11-25 18:51:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9531 to 9459. [2021-11-25 18:51:55,879 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) [2021-11-25 18:51:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13380 transitions. [2021-11-25 18:51:55,934 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13380 transitions. Word has length 118 [2021-11-25 18:51:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:55,935 INFO L470 AbstractCegarLoop]: Abstraction has 9459 states and 13380 transitions. [2021-11-25 18:51:55,935 INFO L471 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) [2021-11-25 18:51:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13380 transitions. [2021-11-25 18:51:55,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 18:51:55,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:55,940 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:51:55,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:51:55,940 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:51:55,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash 478900414, now seen corresponding path program 1 times [2021-11-25 18:51:55,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:55,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725146804] [2021-11-25 18:51:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:55,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 18:51:56,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725146804] [2021-11-25 18:51:56,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725146804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:51:56,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:51:56,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:51:56,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538565332] [2021-11-25 18:51:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:51:56,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:51:56,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:56,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:51:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:51:56,153 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) [2021-11-25 18:51:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:58,368 INFO L93 Difference]: Finished difference Result 24861 states and 35112 transitions. [2021-11-25 18:51:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:51:58,373 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 [2021-11-25 18:51:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:58,477 INFO L225 Difference]: With dead ends: 24861 [2021-11-25 18:51:58,477 INFO L226 Difference]: Without dead ends: 15421 [2021-11-25 18:51:58,522 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:51:58,523 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 1337 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:58,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 2876 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:51:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15421 states. [2021-11-25 18:51:59,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15421 to 15389. [2021-11-25 18:51:59,438 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) [2021-11-25 18:51:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 21649 transitions. [2021-11-25 18:51:59,513 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 21649 transitions. Word has length 121 [2021-11-25 18:51:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:59,516 INFO L470 AbstractCegarLoop]: Abstraction has 15389 states and 21649 transitions. [2021-11-25 18:51:59,516 INFO L471 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) [2021-11-25 18:51:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 21649 transitions. [2021-11-25 18:51:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 18:51:59,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:59,521 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:51:59,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:51:59,522 INFO L402 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)] === [2021-11-25 18:51:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash 755063652, now seen corresponding path program 1 times [2021-11-25 18:51:59,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:59,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623896655] [2021-11-25 18:51:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:59,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-11-25 18:51:59,662 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:59,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623896655] [2021-11-25 18:51:59,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623896655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:51:59,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:51:59,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:51:59,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247000473] [2021-11-25 18:51:59,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:51:59,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:51:59,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:51:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:51:59,665 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) [2021-11-25 18:52:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:02,264 INFO L93 Difference]: Finished difference Result 45249 states and 63699 transitions. [2021-11-25 18:52:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:52:02,265 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 [2021-11-25 18:52:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:02,472 INFO L225 Difference]: With dead ends: 45249 [2021-11-25 18:52:02,472 INFO L226 Difference]: Without dead ends: 29879 [2021-11-25 18:52:02,534 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:02,536 INFO L933 BasicCegarLoop]: 1737 mSDtfsCounter, 1477 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:02,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 3023 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 18:52:02,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29879 states. [2021-11-25 18:52:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29879 to 29805. [2021-11-25 18:52:04,121 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) [2021-11-25 18:52:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29805 states to 29805 states and 41945 transitions. [2021-11-25 18:52:04,268 INFO L78 Accepts]: Start accepts. Automaton has 29805 states and 41945 transitions. Word has length 133 [2021-11-25 18:52:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:04,269 INFO L470 AbstractCegarLoop]: Abstraction has 29805 states and 41945 transitions. [2021-11-25 18:52:04,269 INFO L471 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) [2021-11-25 18:52:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 29805 states and 41945 transitions. [2021-11-25 18:52:04,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-25 18:52:04,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:04,273 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:52:04,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:52:04,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:52:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1478331561, now seen corresponding path program 1 times [2021-11-25 18:52:04,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:04,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128161603] [2021-11-25 18:52:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:04,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-25 18:52:04,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:04,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128161603] [2021-11-25 18:52:04,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128161603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:04,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:04,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:52:04,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869313853] [2021-11-25 18:52:04,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:04,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:52:04,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:04,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:52:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:52:04,705 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) [2021-11-25 18:52:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:06,968 INFO L93 Difference]: Finished difference Result 59497 states and 83762 transitions. [2021-11-25 18:52:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:52:06,969 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 [2021-11-25 18:52:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:07,215 INFO L225 Difference]: With dead ends: 59497 [2021-11-25 18:52:07,215 INFO L226 Difference]: Without dead ends: 29757 [2021-11-25 18:52:07,311 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:07,312 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 1485 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:07,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1280 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:52:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29757 states. [2021-11-25 18:52:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29757 to 29757. [2021-11-25 18:52:08,993 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) [2021-11-25 18:52:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29757 states to 29757 states and 41705 transitions. [2021-11-25 18:52:09,318 INFO L78 Accepts]: Start accepts. Automaton has 29757 states and 41705 transitions. Word has length 156 [2021-11-25 18:52:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:09,319 INFO L470 AbstractCegarLoop]: Abstraction has 29757 states and 41705 transitions. [2021-11-25 18:52:09,319 INFO L471 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) [2021-11-25 18:52:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 29757 states and 41705 transitions. [2021-11-25 18:52:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-25 18:52:09,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:09,322 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:52:09,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:52:09,323 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:52:09,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1624308643, now seen corresponding path program 1 times [2021-11-25 18:52:09,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:09,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246689969] [2021-11-25 18:52:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:09,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-25 18:52:09,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:09,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246689969] [2021-11-25 18:52:09,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246689969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:09,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:09,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:52:09,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796484050] [2021-11-25 18:52:09,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:09,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:52:09,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:52:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:52:09,525 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) [2021-11-25 18:52:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:12,938 INFO L93 Difference]: Finished difference Result 29763 states and 41710 transitions. [2021-11-25 18:52:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:52:12,938 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 [2021-11-25 18:52:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:13,096 INFO L225 Difference]: With dead ends: 29763 [2021-11-25 18:52:13,096 INFO L226 Difference]: Without dead ends: 29761 [2021-11-25 18:52:13,113 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:13,114 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 1463 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 3826 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:13,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 3826 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:52:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29761 states. [2021-11-25 18:52:14,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29761 to 29761. [2021-11-25 18:52:14,636 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) [2021-11-25 18:52:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29761 states to 29761 states and 41708 transitions. [2021-11-25 18:52:14,774 INFO L78 Accepts]: Start accepts. Automaton has 29761 states and 41708 transitions. Word has length 158 [2021-11-25 18:52:14,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:14,779 INFO L470 AbstractCegarLoop]: Abstraction has 29761 states and 41708 transitions. [2021-11-25 18:52:14,779 INFO L471 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) [2021-11-25 18:52:14,779 INFO L276 IsEmpty]: Start isEmpty. Operand 29761 states and 41708 transitions. [2021-11-25 18:52:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-25 18:52:14,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:14,782 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:52:14,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:52:14,783 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:52:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash -501763627, now seen corresponding path program 1 times [2021-11-25 18:52:14,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:14,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057988078] [2021-11-25 18:52:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:14,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-25 18:52:15,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:15,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057988078] [2021-11-25 18:52:15,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057988078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:15,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:15,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:52:15,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754920662] [2021-11-25 18:52:15,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:15,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:52:15,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:15,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:52:15,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:52:15,033 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) [2021-11-25 18:52:18,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:18,270 INFO L93 Difference]: Finished difference Result 29767 states and 41713 transitions. [2021-11-25 18:52:18,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:52:18,272 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 [2021-11-25 18:52:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:18,409 INFO L225 Difference]: With dead ends: 29767 [2021-11-25 18:52:18,409 INFO L226 Difference]: Without dead ends: 29765 [2021-11-25 18:52:18,423 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:18,424 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:18,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:52:18,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29765 states. [2021-11-25 18:52:19,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29765 to 29765. [2021-11-25 18:52:19,666 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) [2021-11-25 18:52:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29765 states to 29765 states and 41711 transitions. [2021-11-25 18:52:19,787 INFO L78 Accepts]: Start accepts. Automaton has 29765 states and 41711 transitions. Word has length 166 [2021-11-25 18:52:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:19,788 INFO L470 AbstractCegarLoop]: Abstraction has 29765 states and 41711 transitions. [2021-11-25 18:52:19,788 INFO L471 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) [2021-11-25 18:52:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 29765 states and 41711 transitions. [2021-11-25 18:52:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-25 18:52:19,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:19,792 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:52:19,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:52:19,793 INFO L402 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)] === [2021-11-25 18:52:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash -388277055, now seen corresponding path program 1 times [2021-11-25 18:52:19,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:19,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645905377] [2021-11-25 18:52:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:19,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2021-11-25 18:52:19,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:19,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645905377] [2021-11-25 18:52:19,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645905377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:19,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:19,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:52:19,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337415207] [2021-11-25 18:52:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:19,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:52:19,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:52:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:52:19,978 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) [2021-11-25 18:52:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:23,389 INFO L93 Difference]: Finished difference Result 29771 states and 41716 transitions. [2021-11-25 18:52:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:52:23,389 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 171 [2021-11-25 18:52:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:23,478 INFO L225 Difference]: With dead ends: 29771 [2021-11-25 18:52:23,479 INFO L226 Difference]: Without dead ends: 29769 [2021-11-25 18:52:23,491 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:23,492 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:23,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:52:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29769 states. [2021-11-25 18:52:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29769 to 29769. [2021-11-25 18:52:24,786 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) [2021-11-25 18:52:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29769 states to 29769 states and 41714 transitions. [2021-11-25 18:52:24,902 INFO L78 Accepts]: Start accepts. Automaton has 29769 states and 41714 transitions. Word has length 171 [2021-11-25 18:52:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:24,903 INFO L470 AbstractCegarLoop]: Abstraction has 29769 states and 41714 transitions. [2021-11-25 18:52:24,903 INFO L471 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) [2021-11-25 18:52:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29769 states and 41714 transitions. [2021-11-25 18:52:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-25 18:52:24,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:24,908 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:52:24,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:52:24,909 INFO L402 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)] === [2021-11-25 18:52:24,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash 88847854, now seen corresponding path program 1 times [2021-11-25 18:52:24,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:24,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718796448] [2021-11-25 18:52:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:24,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2021-11-25 18:52:25,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:25,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718796448] [2021-11-25 18:52:25,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718796448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:25,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:25,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:52:25,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274825701] [2021-11-25 18:52:25,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:25,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:52:25,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:52:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:52:25,110 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) [2021-11-25 18:52:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:28,108 INFO L93 Difference]: Finished difference Result 29775 states and 41719 transitions. [2021-11-25 18:52:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:52:28,109 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 [2021-11-25 18:52:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:28,197 INFO L225 Difference]: With dead ends: 29775 [2021-11-25 18:52:28,198 INFO L226 Difference]: Without dead ends: 29773 [2021-11-25 18:52:28,211 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:28,212 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:28,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 18:52:28,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29773 states. [2021-11-25 18:52:29,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29773 to 29773. [2021-11-25 18:52:29,427 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) [2021-11-25 18:52:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29773 states to 29773 states and 41717 transitions. [2021-11-25 18:52:29,528 INFO L78 Accepts]: Start accepts. Automaton has 29773 states and 41717 transitions. Word has length 177 [2021-11-25 18:52:29,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:29,529 INFO L470 AbstractCegarLoop]: Abstraction has 29773 states and 41717 transitions. [2021-11-25 18:52:29,529 INFO L471 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) [2021-11-25 18:52:29,529 INFO L276 IsEmpty]: Start isEmpty. Operand 29773 states and 41717 transitions. [2021-11-25 18:52:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-25 18:52:29,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:29,535 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:52:29,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:52:29,535 INFO L402 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)] === [2021-11-25 18:52:29,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:29,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1536348216, now seen corresponding path program 1 times [2021-11-25 18:52:29,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:29,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017133393] [2021-11-25 18:52:29,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:29,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-25 18:52:29,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017133393] [2021-11-25 18:52:29,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017133393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:29,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:29,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:52:29,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383026485] [2021-11-25 18:52:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:29,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:52:29,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:52:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:52:29,715 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) [2021-11-25 18:52:32,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:32,542 INFO L93 Difference]: Finished difference Result 29779 states and 41722 transitions. [2021-11-25 18:52:32,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:52:32,543 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 182 [2021-11-25 18:52:32,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:32,625 INFO L225 Difference]: With dead ends: 29779 [2021-11-25 18:52:32,626 INFO L226 Difference]: Without dead ends: 29777 [2021-11-25 18:52:32,637 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:32,638 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:32,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 18:52:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29777 states. [2021-11-25 18:52:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29777 to 29777. [2021-11-25 18:52:33,899 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) [2021-11-25 18:52:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29777 states to 29777 states and 41720 transitions. [2021-11-25 18:52:33,992 INFO L78 Accepts]: Start accepts. Automaton has 29777 states and 41720 transitions. Word has length 182 [2021-11-25 18:52:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:33,993 INFO L470 AbstractCegarLoop]: Abstraction has 29777 states and 41720 transitions. [2021-11-25 18:52:33,994 INFO L471 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) [2021-11-25 18:52:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 29777 states and 41720 transitions. [2021-11-25 18:52:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-25 18:52:33,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:33,998 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:52:33,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:52:33,999 INFO L402 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)] === [2021-11-25 18:52:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1080878574, now seen corresponding path program 1 times [2021-11-25 18:52:33,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:34,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075225321] [2021-11-25 18:52:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:34,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-25 18:52:34,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:34,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075225321] [2021-11-25 18:52:34,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075225321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:34,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:34,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:52:34,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143327735] [2021-11-25 18:52:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:34,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:52:34,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:52:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:52:34,184 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) [2021-11-25 18:52:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:37,370 INFO L93 Difference]: Finished difference Result 29783 states and 41725 transitions. [2021-11-25 18:52:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:52:37,371 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 [2021-11-25 18:52:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:37,468 INFO L225 Difference]: With dead ends: 29783 [2021-11-25 18:52:37,469 INFO L226 Difference]: Without dead ends: 29781 [2021-11-25 18:52:37,481 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:37,482 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:37,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 18:52:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29781 states. [2021-11-25 18:52:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29781 to 29781. [2021-11-25 18:52:38,886 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) [2021-11-25 18:52:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29781 states to 29781 states and 41723 transitions. [2021-11-25 18:52:38,982 INFO L78 Accepts]: Start accepts. Automaton has 29781 states and 41723 transitions. Word has length 187 [2021-11-25 18:52:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:38,983 INFO L470 AbstractCegarLoop]: Abstraction has 29781 states and 41723 transitions. [2021-11-25 18:52:38,983 INFO L471 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) [2021-11-25 18:52:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 29781 states and 41723 transitions. [2021-11-25 18:52:38,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-25 18:52:38,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:38,989 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:52:38,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:52:38,989 INFO L402 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)] === [2021-11-25 18:52:38,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:38,990 INFO L85 PathProgramCache]: Analyzing trace with hash -296544959, now seen corresponding path program 1 times [2021-11-25 18:52:38,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:38,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115675700] [2021-11-25 18:52:38,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:38,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2021-11-25 18:52:39,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:39,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115675700] [2021-11-25 18:52:39,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115675700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:39,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:39,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:52:39,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233095859] [2021-11-25 18:52:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:39,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:52:39,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:52:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:52:39,158 INFO L87 Difference]: Start difference. First operand 29781 states and 41723 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 18:52:42,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:42,153 INFO L93 Difference]: Finished difference Result 29787 states and 41728 transitions. [2021-11-25 18:52:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:52:42,154 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 191 [2021-11-25 18:52:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:42,256 INFO L225 Difference]: With dead ends: 29787 [2021-11-25 18:52:42,256 INFO L226 Difference]: Without dead ends: 29785 [2021-11-25 18:52:42,269 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:42,270 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:42,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:52:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29785 states. [2021-11-25 18:52:43,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29785 to 29785. [2021-11-25 18:52:43,689 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) [2021-11-25 18:52:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29785 states to 29785 states and 41726 transitions. [2021-11-25 18:52:43,787 INFO L78 Accepts]: Start accepts. Automaton has 29785 states and 41726 transitions. Word has length 191 [2021-11-25 18:52:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:43,788 INFO L470 AbstractCegarLoop]: Abstraction has 29785 states and 41726 transitions. [2021-11-25 18:52:43,788 INFO L471 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 18:52:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 29785 states and 41726 transitions. [2021-11-25 18:52:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-25 18:52:43,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:43,794 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:52:43,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:52:43,794 INFO L402 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)] === [2021-11-25 18:52:43,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:43,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1511922381, now seen corresponding path program 1 times [2021-11-25 18:52:43,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:43,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535869450] [2021-11-25 18:52:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:43,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-25 18:52:43,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:43,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535869450] [2021-11-25 18:52:43,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535869450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:52:43,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:52:43,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:52:43,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662114501] [2021-11-25 18:52:43,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:52:43,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:52:43,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:52:43,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:52:43,963 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) [2021-11-25 18:52:47,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:47,905 INFO L93 Difference]: Finished difference Result 32987 states and 45541 transitions. [2021-11-25 18:52:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:52:47,905 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, (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 193 [2021-11-25 18:52:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:48,029 INFO L225 Difference]: With dead ends: 32987 [2021-11-25 18:52:48,029 INFO L226 Difference]: Without dead ends: 32985 [2021-11-25 18:52:48,043 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:52:48,044 INFO L933 BasicCegarLoop]: 1423 mSDtfsCounter, 1183 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:48,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 4785 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:52:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32985 states.