./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba --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 5afcd851c0eed3ee93d773a0172936a989a39cd6889ca2587c3b833a21bc8a3a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:24:05,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:24:05,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:24:05,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:24:05,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:24:05,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:24:05,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:24:05,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:24:05,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:24:05,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:24:05,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:24:05,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:24:05,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:24:05,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:24:05,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:24:05,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:24:05,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:24:05,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:24:05,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:24:05,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:24:05,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:24:05,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:24:05,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:24:05,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:24:05,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:24:05,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:24:05,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:24:05,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:24:05,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:24:05,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:24:05,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:24:05,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:24:05,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:24:05,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:24:05,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:24:05,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:24:05,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:24:05,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:24:05,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:24:05,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:24:05,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:24:05,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:24:05,331 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:24:05,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:24:05,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:24:05,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:24:05,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:24:05,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:24:05,333 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:24:05,334 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:24:05,334 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:24:05,334 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:24:05,335 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:24:05,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:24:05,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:24:05,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:24:05,336 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:24:05,337 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:24:05,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:24:05,337 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:24:05,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:24:05,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:24:05,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:24:05,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:24:05,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:24:05,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:24:05,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:24:05,340 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:24:05,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:24:05,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:24:05,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:24:05,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:24:05,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:24:05,341 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:24:05,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:24:05,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:24:05,342 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:24:05,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:24:05,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:24:05,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:24:05,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5afcd851c0eed3ee93d773a0172936a989a39cd6889ca2587c3b833a21bc8a3a [2022-11-22 01:24:05,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:24:05,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:24:05,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:24:05,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:24:05,698 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:24:05,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-22 01:24:08,831 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:24:09,539 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:24:09,541 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-22 01:24:09,595 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/data/c6b9f8fc8/02999169f6314442adc44e06f2709816/FLAGd4da075cf [2022-11-22 01:24:09,613 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/data/c6b9f8fc8/02999169f6314442adc44e06f2709816 [2022-11-22 01:24:09,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:24:09,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:24:09,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:24:09,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:24:09,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:24:09,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:24:09" (1/1) ... [2022-11-22 01:24:09,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92ae495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:09, skipping insertion in model container [2022-11-22 01:24:09,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:24:09" (1/1) ... [2022-11-22 01:24:09,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:24:09,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:24:13,415 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410165,410178] [2022-11-22 01:24:13,423 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410334,410347] [2022-11-22 01:24:13,426 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410501,410514] [2022-11-22 01:24:13,433 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410669,410682] [2022-11-22 01:24:13,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:24:13,509 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:24:14,023 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410165,410178] [2022-11-22 01:24:14,024 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410334,410347] [2022-11-22 01:24:14,025 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410501,410514] [2022-11-22 01:24:14,025 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410669,410682] [2022-11-22 01:24:14,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:24:14,322 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:24:14,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14 WrapperNode [2022-11-22 01:24:14,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:24:14,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:24:14,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:24:14,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:24:14,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:14,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:14,704 INFO L138 Inliner]: procedures = 541, calls = 2859, calls flagged for inlining = 282, calls inlined = 248, statements flattened = 7269 [2022-11-22 01:24:14,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:24:14,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:24:14,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:24:14,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:24:14,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:14,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:14,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:14,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:14,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:14,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:15,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:15,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:15,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:24:15,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:24:15,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:24:15,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:24:15,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (1/1) ... [2022-11-22 01:24:15,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:24:15,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:24:15,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:24:15,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:24:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-22 01:24:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-22 01:24:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:24:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:24:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 01:24:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 01:24:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:24:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:24:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:24:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:24:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 01:24:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 01:24:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:24:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:24:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 01:24:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 01:24:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:24:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:24:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2022-11-22 01:24:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2022-11-22 01:24:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_interrupt [2022-11-22 01:24:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_interrupt [2022-11-22 01:24:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 01:24:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 01:24:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 01:24:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 01:24:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:24:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:24:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:24:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:24:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 01:24:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 01:24:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:24:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 01:24:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_bcr [2022-11-22 01:24:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_bcr [2022-11-22 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:24:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:24:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 01:24:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 01:24:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:24:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:24:15,190 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:24:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-22 01:24:15,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-22 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:24:15,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_tx_ring [2022-11-22 01:24:15,191 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_tx_ring [2022-11-22 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 01:24:15,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:24:15,192 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_bcr [2022-11-22 01:24:15,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_bcr [2022-11-22 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 01:24:15,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 01:24:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:24:15,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:24:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:24:15,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:24:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 01:24:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 01:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:24:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_start [2022-11-22 01:24:15,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_start [2022-11-22 01:24:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-22 01:24:15,197 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-22 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~~u16~0 [2022-11-22 01:24:15,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~~u16~0 [2022-11-22 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:24:15,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 01:24:15,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 01:24:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_open [2022-11-22 01:24:15,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_open [2022-11-22 01:24:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:24:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 01:24:15,199 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 01:24:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:24:15,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:24:15,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:24:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:24:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_reset [2022-11-22 01:24:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_reset [2022-11-22 01:24:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_pcnet32_private [2022-11-22 01:24:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_pcnet32_private [2022-11-22 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 01:24:15,202 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_restart [2022-11-22 01:24:15,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_restart [2022-11-22 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:24:15,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:24:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-22 01:24:15,207 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-22 01:24:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:24:15,207 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:24:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 01:24:15,208 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 01:24:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:24:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:24:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_csr [2022-11-22 01:24:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_csr [2022-11-22 01:24:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-22 01:24:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-22 01:24:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:24:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:24:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_reset [2022-11-22 01:24:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_reset [2022-11-22 01:24:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 01:24:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 01:24:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:24:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:24:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 01:24:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 01:24:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:24:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:24:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:24:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:24:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_pm_resume [2022-11-22 01:24:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_pm_resume [2022-11-22 01:24:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:24:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:24:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_check_media [2022-11-22 01:24:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_check_media [2022-11-22 01:24:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_get_regs_len [2022-11-22 01:24:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_get_regs_len [2022-11-22 01:24:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 01:24:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 01:24:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 01:24:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_poll_controller [2022-11-22 01:24:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_poll_controller [2022-11-22 01:24:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_free_ring [2022-11-22 01:24:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_free_ring [2022-11-22 01:24:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 01:24:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 01:24:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:24:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:24:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-22 01:24:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-22 01:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:24:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 01:24:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 01:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2022-11-22 01:24:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2022-11-22 01:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_rx_ring [2022-11-22 01:24:15,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_rx_ring [2022-11-22 01:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_csr [2022-11-22 01:24:15,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_csr [2022-11-22 01:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_tx_timeout [2022-11-22 01:24:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_tx_timeout [2022-11-22 01:24:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 01:24:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 01:24:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:24:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_stop [2022-11-22 01:24:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_stop [2022-11-22 01:24:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:24:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:24:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:24:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_pcnet32_private [2022-11-22 01:24:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_pcnet32_private [2022-11-22 01:24:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:24:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_csr [2022-11-22 01:24:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_csr [2022-11-22 01:24:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_set_multicast_list [2022-11-22 01:24:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_set_multicast_list [2022-11-22 01:24:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-22 01:24:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-22 01:24:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:24:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:24:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2022-11-22 01:24:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2022-11-22 01:24:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:24:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:24:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_probe1 [2022-11-22 01:24:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_probe1 [2022-11-22 01:24:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-22 01:24:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-22 01:24:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 01:24:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 01:24:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_remove_one [2022-11-22 01:24:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_remove_one [2022-11-22 01:24:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2022-11-22 01:24:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2022-11-22 01:24:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2022-11-22 01:24:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2022-11-22 01:24:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_bcr [2022-11-22 01:24:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_bcr [2022-11-22 01:24:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 01:24:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 01:24:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:24:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:24:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:24:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:24:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_bcr [2022-11-22 01:24:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_bcr [2022-11-22 01:24:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:24:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:24:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_init_ring [2022-11-22 01:24:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_init_ring [2022-11-22 01:24:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_close [2022-11-22 01:24:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_close [2022-11-22 01:24:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-22 01:24:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-22 01:24:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:24:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:24:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:24:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_suspend [2022-11-22 01:24:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_suspend [2022-11-22 01:24:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:24:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:24:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 01:24:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 01:24:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-22 01:24:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-22 01:24:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_csr [2022-11-22 01:24:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_csr [2022-11-22 01:24:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_load_multicast [2022-11-22 01:24:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_load_multicast [2022-11-22 01:24:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-22 01:24:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-22 01:24:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_nway_reset [2022-11-22 01:24:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_nway_reset [2022-11-22 01:24:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:24:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:24:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 01:24:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 01:24:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 01:24:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 01:24:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-22 01:24:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-22 01:24:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-22 01:24:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-22 01:24:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:24:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-22 01:24:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-22 01:24:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-22 01:24:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-22 01:24:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:24:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:24:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 01:24:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 01:24:16,381 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:24:16,384 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:24:16,564 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:24:25,157 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:24:27,305 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:24:27,305 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-22 01:24:27,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:24:27 BoogieIcfgContainer [2022-11-22 01:24:27,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:24:27,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:24:27,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:24:27,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:24:27,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:24:09" (1/3) ... [2022-11-22 01:24:27,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@934120e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:24:27, skipping insertion in model container [2022-11-22 01:24:27,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:14" (2/3) ... [2022-11-22 01:24:27,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@934120e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:24:27, skipping insertion in model container [2022-11-22 01:24:27,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:24:27" (3/3) ... [2022-11-22 01:24:27,323 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-22 01:24:27,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:24:27,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:24:27,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:24:27,460 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@515ab348, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:24:27,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:24:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 1804 states, 1038 states have (on average 1.2842003853564548) internal successors, (1333), 1103 states have internal predecessors, (1333), 647 states have call successors, (647), 118 states have call predecessors, (647), 117 states have return successors, (639), 620 states have call predecessors, (639), 639 states have call successors, (639) [2022-11-22 01:24:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-22 01:24:27,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:27,487 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-22 01:24:27,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:24:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:27,495 INFO L85 PathProgramCache]: Analyzing trace with hash 408499364, now seen corresponding path program 1 times [2022-11-22 01:24:27,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:27,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321871244] [2022-11-22 01:24:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:24:28,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:28,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321871244] [2022-11-22 01:24:28,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321871244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:28,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:28,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:24:28,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397535234] [2022-11-22 01:24:28,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:28,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:24:28,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:28,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:24:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:28,600 INFO L87 Difference]: Start difference. First operand has 1804 states, 1038 states have (on average 1.2842003853564548) internal successors, (1333), 1103 states have internal predecessors, (1333), 647 states have call successors, (647), 118 states have call predecessors, (647), 117 states have return successors, (639), 620 states have call predecessors, (639), 639 states have call successors, (639) Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:24:31,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:35,560 INFO L93 Difference]: Finished difference Result 5286 states and 7853 transitions. [2022-11-22 01:24:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:24:35,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2022-11-22 01:24:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:35,601 INFO L225 Difference]: With dead ends: 5286 [2022-11-22 01:24:35,601 INFO L226 Difference]: Without dead ends: 3477 [2022-11-22 01:24:35,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:24:35,624 INFO L413 NwaCegarLoop]: 3436 mSDtfsCounter, 2465 mSDsluCounter, 9112 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 12548 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:35,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2478 Valid, 12548 Invalid, 1606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1602 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-22 01:24:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2022-11-22 01:24:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3470. [2022-11-22 01:24:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3470 states, 1998 states have (on average 1.2747747747747749) internal successors, (2547), 2109 states have internal predecessors, (2547), 1236 states have call successors, (1236), 235 states have call predecessors, (1236), 233 states have return successors, (1236), 1193 states have call predecessors, (1236), 1230 states have call successors, (1236) [2022-11-22 01:24:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 5019 transitions. [2022-11-22 01:24:36,064 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 5019 transitions. Word has length 37 [2022-11-22 01:24:36,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:36,066 INFO L495 AbstractCegarLoop]: Abstraction has 3470 states and 5019 transitions. [2022-11-22 01:24:36,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:24:36,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 5019 transitions. [2022-11-22 01:24:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-22 01:24:36,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:36,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-22 01:24:36,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:24:36,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:24:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash 854431682, now seen corresponding path program 1 times [2022-11-22 01:24:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:36,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475674348] [2022-11-22 01:24:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:24:36,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:36,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475674348] [2022-11-22 01:24:36,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475674348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:36,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:36,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:24:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544158089] [2022-11-22 01:24:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:36,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:24:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:24:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:36,612 INFO L87 Difference]: Start difference. First operand 3470 states and 5019 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 01:24:39,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:42,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:43,243 INFO L93 Difference]: Finished difference Result 4806 states and 6740 transitions. [2022-11-22 01:24:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:24:43,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2022-11-22 01:24:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:43,274 INFO L225 Difference]: With dead ends: 4806 [2022-11-22 01:24:43,274 INFO L226 Difference]: Without dead ends: 4804 [2022-11-22 01:24:43,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:24:43,279 INFO L413 NwaCegarLoop]: 2606 mSDtfsCounter, 1705 mSDsluCounter, 6848 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 9454 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:43,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 9454 Invalid, 1245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-22 01:24:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2022-11-22 01:24:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 4800. [2022-11-22 01:24:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 2741 states have (on average 1.2546515870120394) internal successors, (3439), 2886 states have internal predecessors, (3439), 1646 states have call successors, (1646), 410 states have call predecessors, (1646), 410 states have return successors, (1650), 1590 states have call predecessors, (1650), 1640 states have call successors, (1650) [2022-11-22 01:24:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 6735 transitions. [2022-11-22 01:24:43,563 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 6735 transitions. Word has length 42 [2022-11-22 01:24:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:43,564 INFO L495 AbstractCegarLoop]: Abstraction has 4800 states and 6735 transitions. [2022-11-22 01:24:43,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 01:24:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 6735 transitions. [2022-11-22 01:24:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-22 01:24:43,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:43,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-22 01:24:43,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:24:43,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:24:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1209168092, now seen corresponding path program 1 times [2022-11-22 01:24:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:43,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445747803] [2022-11-22 01:24:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:43,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 01:24:44,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:44,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445747803] [2022-11-22 01:24:44,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445747803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:44,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:44,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:24:44,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468071611] [2022-11-22 01:24:44,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:44,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:24:44,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:44,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:24:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:44,175 INFO L87 Difference]: Start difference. First operand 4800 states and 6735 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 01:24:46,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:49,837 INFO L93 Difference]: Finished difference Result 4814 states and 6746 transitions. [2022-11-22 01:24:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:24:49,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2022-11-22 01:24:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:49,873 INFO L225 Difference]: With dead ends: 4814 [2022-11-22 01:24:49,873 INFO L226 Difference]: Without dead ends: 4812 [2022-11-22 01:24:49,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:24:49,880 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 1705 mSDsluCounter, 6836 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 9436 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:49,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 9436 Invalid, 1245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 01:24:49,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4812 states. [2022-11-22 01:24:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4812 to 4808. [2022-11-22 01:24:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4808 states, 2747 states have (on average 1.2540953767746632) internal successors, (3445), 2892 states have internal predecessors, (3445), 1646 states have call successors, (1646), 412 states have call predecessors, (1646), 412 states have return successors, (1650), 1590 states have call predecessors, (1650), 1640 states have call successors, (1650) [2022-11-22 01:24:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4808 states to 4808 states and 6741 transitions. [2022-11-22 01:24:50,324 INFO L78 Accepts]: Start accepts. Automaton has 4808 states and 6741 transitions. Word has length 47 [2022-11-22 01:24:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:50,325 INFO L495 AbstractCegarLoop]: Abstraction has 4808 states and 6741 transitions. [2022-11-22 01:24:50,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 01:24:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4808 states and 6741 transitions. [2022-11-22 01:24:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-22 01:24:50,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:50,326 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:24:50,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:24:50,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1856544922, now seen corresponding path program 1 times [2022-11-22 01:24:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:50,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170183169] [2022-11-22 01:24:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:50,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-22 01:24:50,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:50,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170183169] [2022-11-22 01:24:50,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170183169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:50,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:50,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:24:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567914408] [2022-11-22 01:24:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:24:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:24:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:50,814 INFO L87 Difference]: Start difference. First operand 4808 states and 6741 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:24:53,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:24:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:56,135 INFO L93 Difference]: Finished difference Result 4822 states and 6752 transitions. [2022-11-22 01:24:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:24:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 59 [2022-11-22 01:24:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:56,168 INFO L225 Difference]: With dead ends: 4822 [2022-11-22 01:24:56,168 INFO L226 Difference]: Without dead ends: 4820 [2022-11-22 01:24:56,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:24:56,174 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 1700 mSDsluCounter, 6836 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 9436 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:56,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 9436 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 01:24:56,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2022-11-22 01:24:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 4816. [2022-11-22 01:24:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 2753 states have (on average 1.2535415909916454) internal successors, (3451), 2898 states have internal predecessors, (3451), 1646 states have call successors, (1646), 414 states have call predecessors, (1646), 414 states have return successors, (1650), 1590 states have call predecessors, (1650), 1640 states have call successors, (1650) [2022-11-22 01:24:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 6747 transitions. [2022-11-22 01:24:56,528 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 6747 transitions. Word has length 59 [2022-11-22 01:24:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:56,529 INFO L495 AbstractCegarLoop]: Abstraction has 4816 states and 6747 transitions. [2022-11-22 01:24:56,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:24:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 6747 transitions. [2022-11-22 01:24:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 01:24:56,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:56,531 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:56,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:24:56,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:24:56,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:56,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1331135284, now seen corresponding path program 1 times [2022-11-22 01:24:56,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:56,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969294866] [2022-11-22 01:24:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:56,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-22 01:24:56,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:56,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969294866] [2022-11-22 01:24:56,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969294866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:56,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:56,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:24:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440329301] [2022-11-22 01:24:56,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:56,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:24:56,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:24:56,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:56,948 INFO L87 Difference]: Start difference. First operand 4816 states and 6747 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 01:24:59,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:02,343 INFO L93 Difference]: Finished difference Result 4830 states and 6758 transitions. [2022-11-22 01:25:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:25:02,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 64 [2022-11-22 01:25:02,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:02,377 INFO L225 Difference]: With dead ends: 4830 [2022-11-22 01:25:02,378 INFO L226 Difference]: Without dead ends: 4828 [2022-11-22 01:25:02,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:02,384 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 1700 mSDsluCounter, 6836 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 9436 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:02,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 9436 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-22 01:25:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2022-11-22 01:25:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4824. [2022-11-22 01:25:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 2759 states have (on average 1.2529902138455962) internal successors, (3457), 2904 states have internal predecessors, (3457), 1646 states have call successors, (1646), 416 states have call predecessors, (1646), 416 states have return successors, (1650), 1590 states have call predecessors, (1650), 1640 states have call successors, (1650) [2022-11-22 01:25:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 6753 transitions. [2022-11-22 01:25:02,734 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 6753 transitions. Word has length 64 [2022-11-22 01:25:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:02,735 INFO L495 AbstractCegarLoop]: Abstraction has 4824 states and 6753 transitions. [2022-11-22 01:25:02,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 01:25:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 6753 transitions. [2022-11-22 01:25:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 01:25:02,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:02,738 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:02,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:25:02,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1784576102, now seen corresponding path program 1 times [2022-11-22 01:25:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:02,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498545588] [2022-11-22 01:25:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-22 01:25:03,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:03,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498545588] [2022-11-22 01:25:03,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498545588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:03,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:03,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:03,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718029335] [2022-11-22 01:25:03,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:03,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:03,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:03,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:03,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:03,146 INFO L87 Difference]: Start difference. First operand 4824 states and 6753 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 01:25:05,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:07,889 INFO L93 Difference]: Finished difference Result 4838 states and 6764 transitions. [2022-11-22 01:25:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:25:07,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2022-11-22 01:25:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:07,919 INFO L225 Difference]: With dead ends: 4838 [2022-11-22 01:25:07,919 INFO L226 Difference]: Without dead ends: 4836 [2022-11-22 01:25:07,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:07,925 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 1700 mSDsluCounter, 6836 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 9436 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:07,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 9436 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-22 01:25:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2022-11-22 01:25:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4832. [2022-11-22 01:25:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 2765 states have (on average 1.2524412296564196) internal successors, (3463), 2910 states have internal predecessors, (3463), 1646 states have call successors, (1646), 418 states have call predecessors, (1646), 418 states have return successors, (1650), 1590 states have call predecessors, (1650), 1640 states have call successors, (1650) [2022-11-22 01:25:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 6759 transitions. [2022-11-22 01:25:08,332 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 6759 transitions. Word has length 69 [2022-11-22 01:25:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:08,333 INFO L495 AbstractCegarLoop]: Abstraction has 4832 states and 6759 transitions. [2022-11-22 01:25:08,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 01:25:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 6759 transitions. [2022-11-22 01:25:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 01:25:08,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:08,336 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2022-11-22 01:25:08,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:25:08,337 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:08,337 INFO L85 PathProgramCache]: Analyzing trace with hash -251005916, now seen corresponding path program 1 times [2022-11-22 01:25:08,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:08,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350849118] [2022-11-22 01:25:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:08,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-22 01:25:08,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:08,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350849118] [2022-11-22 01:25:08,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350849118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:08,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:08,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:08,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495319614] [2022-11-22 01:25:08,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:08,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:08,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:08,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:08,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:08,733 INFO L87 Difference]: Start difference. First operand 4832 states and 6759 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 01:25:11,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:13,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:14,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:14,471 INFO L93 Difference]: Finished difference Result 4846 states and 6770 transitions. [2022-11-22 01:25:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:25:14,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-22 01:25:14,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:14,495 INFO L225 Difference]: With dead ends: 4846 [2022-11-22 01:25:14,495 INFO L226 Difference]: Without dead ends: 4844 [2022-11-22 01:25:14,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:14,500 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 1705 mSDsluCounter, 6836 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 9436 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:14,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 9436 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-22 01:25:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2022-11-22 01:25:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4840. [2022-11-22 01:25:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4840 states, 2771 states have (on average 1.2518946228798267) internal successors, (3469), 2916 states have internal predecessors, (3469), 1646 states have call successors, (1646), 420 states have call predecessors, (1646), 420 states have return successors, (1650), 1590 states have call predecessors, (1650), 1640 states have call successors, (1650) [2022-11-22 01:25:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4840 states to 4840 states and 6765 transitions. [2022-11-22 01:25:14,849 INFO L78 Accepts]: Start accepts. Automaton has 4840 states and 6765 transitions. Word has length 67 [2022-11-22 01:25:14,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:14,849 INFO L495 AbstractCegarLoop]: Abstraction has 4840 states and 6765 transitions. [2022-11-22 01:25:14,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 01:25:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4840 states and 6765 transitions. [2022-11-22 01:25:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-22 01:25:14,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:14,851 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:14,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:25:14,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash -430481766, now seen corresponding path program 1 times [2022-11-22 01:25:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:14,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214609547] [2022-11-22 01:25:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-22 01:25:15,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:15,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214609547] [2022-11-22 01:25:15,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214609547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:15,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:15,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528997333] [2022-11-22 01:25:15,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:15,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:15,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:15,213 INFO L87 Difference]: Start difference. First operand 4840 states and 6765 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 01:25:17,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:19,775 INFO L93 Difference]: Finished difference Result 6249 states and 8622 transitions. [2022-11-22 01:25:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:25:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-22 01:25:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:19,810 INFO L225 Difference]: With dead ends: 6249 [2022-11-22 01:25:19,810 INFO L226 Difference]: Without dead ends: 6247 [2022-11-22 01:25:19,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:19,817 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1388 mSDsluCounter, 7456 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 10128 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:19,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 10128 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1328 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 01:25:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6247 states. [2022-11-22 01:25:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6247 to 6238. [2022-11-22 01:25:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 3530 states have (on average 1.2492917847025495) internal successors, (4410), 3752 states have internal predecessors, (4410), 2090 states have call successors, (2090), 626 states have call predecessors, (2090), 615 states have return successors, (2113), 1967 states have call predecessors, (2113), 2081 states have call successors, (2113) [2022-11-22 01:25:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 8613 transitions. [2022-11-22 01:25:20,276 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 8613 transitions. Word has length 79 [2022-11-22 01:25:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:20,278 INFO L495 AbstractCegarLoop]: Abstraction has 6238 states and 8613 transitions. [2022-11-22 01:25:20,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 01:25:20,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 8613 transitions. [2022-11-22 01:25:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 01:25:20,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:20,285 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 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] [2022-11-22 01:25:20,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:25:20,286 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash -274071900, now seen corresponding path program 1 times [2022-11-22 01:25:20,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:20,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545657132] [2022-11-22 01:25:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:20,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-22 01:25:20,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:20,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545657132] [2022-11-22 01:25:20,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545657132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:20,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:20,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:20,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615188108] [2022-11-22 01:25:20,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:20,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:20,626 INFO L87 Difference]: Start difference. First operand 6238 states and 8613 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 01:25:23,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:25,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:25,606 INFO L93 Difference]: Finished difference Result 6256 states and 8628 transitions. [2022-11-22 01:25:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:25:25,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-22 01:25:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:25,640 INFO L225 Difference]: With dead ends: 6256 [2022-11-22 01:25:25,640 INFO L226 Difference]: Without dead ends: 6254 [2022-11-22 01:25:25,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:25,646 INFO L413 NwaCegarLoop]: 2588 mSDtfsCounter, 1705 mSDsluCounter, 6812 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 9400 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:25,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 9400 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-22 01:25:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6254 states. [2022-11-22 01:25:26,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6254 to 6250. [2022-11-22 01:25:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6250 states, 3539 states have (on average 1.248657812941509) internal successors, (4419), 3761 states have internal predecessors, (4419), 2090 states have call successors, (2090), 629 states have call predecessors, (2090), 618 states have return successors, (2113), 1967 states have call predecessors, (2113), 2081 states have call successors, (2113) [2022-11-22 01:25:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6250 states to 6250 states and 8622 transitions. [2022-11-22 01:25:26,113 INFO L78 Accepts]: Start accepts. Automaton has 6250 states and 8622 transitions. Word has length 77 [2022-11-22 01:25:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:26,113 INFO L495 AbstractCegarLoop]: Abstraction has 6250 states and 8622 transitions. [2022-11-22 01:25:26,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 01:25:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6250 states and 8622 transitions. [2022-11-22 01:25:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 01:25:26,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:26,116 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 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] [2022-11-22 01:25:26,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:25:26,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:26,117 INFO L85 PathProgramCache]: Analyzing trace with hash 561236930, now seen corresponding path program 1 times [2022-11-22 01:25:26,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:26,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277672742] [2022-11-22 01:25:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:26,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-22 01:25:26,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:26,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277672742] [2022-11-22 01:25:26,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277672742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:26,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:26,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:26,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555967927] [2022-11-22 01:25:26,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:26,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:26,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:26,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:26,450 INFO L87 Difference]: Start difference. First operand 6250 states and 8622 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-22 01:25:28,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:31,428 INFO L93 Difference]: Finished difference Result 6268 states and 8637 transitions. [2022-11-22 01:25:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:25:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2022-11-22 01:25:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:31,455 INFO L225 Difference]: With dead ends: 6268 [2022-11-22 01:25:31,455 INFO L226 Difference]: Without dead ends: 6266 [2022-11-22 01:25:31,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:31,459 INFO L413 NwaCegarLoop]: 2588 mSDtfsCounter, 1705 mSDsluCounter, 6812 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 9400 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:31,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 9400 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-22 01:25:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2022-11-22 01:25:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6262. [2022-11-22 01:25:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6262 states, 3548 states have (on average 1.2480270574971815) internal successors, (4428), 3770 states have internal predecessors, (4428), 2090 states have call successors, (2090), 632 states have call predecessors, (2090), 621 states have return successors, (2113), 1967 states have call predecessors, (2113), 2081 states have call successors, (2113) [2022-11-22 01:25:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6262 states to 6262 states and 8631 transitions. [2022-11-22 01:25:31,890 INFO L78 Accepts]: Start accepts. Automaton has 6262 states and 8631 transitions. Word has length 82 [2022-11-22 01:25:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:31,890 INFO L495 AbstractCegarLoop]: Abstraction has 6262 states and 8631 transitions. [2022-11-22 01:25:31,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-22 01:25:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6262 states and 8631 transitions. [2022-11-22 01:25:31,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-22 01:25:31,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:31,894 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 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] [2022-11-22 01:25:31,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:25:31,894 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1441752796, now seen corresponding path program 1 times [2022-11-22 01:25:31,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:31,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545195440] [2022-11-22 01:25:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:31,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-22 01:25:32,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:32,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545195440] [2022-11-22 01:25:32,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545195440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:32,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:32,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:32,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157737323] [2022-11-22 01:25:32,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:32,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:32,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:32,221 INFO L87 Difference]: Start difference. First operand 6262 states and 8631 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 01:25:34,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:37,320 INFO L93 Difference]: Finished difference Result 6280 states and 8646 transitions. [2022-11-22 01:25:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:25:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 87 [2022-11-22 01:25:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:37,353 INFO L225 Difference]: With dead ends: 6280 [2022-11-22 01:25:37,354 INFO L226 Difference]: Without dead ends: 6278 [2022-11-22 01:25:37,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:37,359 INFO L413 NwaCegarLoop]: 2588 mSDtfsCounter, 1705 mSDsluCounter, 6812 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 9400 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:37,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 9400 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 01:25:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2022-11-22 01:25:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 6274. [2022-11-22 01:25:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6274 states, 3557 states have (on average 1.2473994939555806) internal successors, (4437), 3779 states have internal predecessors, (4437), 2090 states have call successors, (2090), 635 states have call predecessors, (2090), 624 states have return successors, (2113), 1967 states have call predecessors, (2113), 2081 states have call successors, (2113) [2022-11-22 01:25:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 8640 transitions. [2022-11-22 01:25:37,824 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 8640 transitions. Word has length 87 [2022-11-22 01:25:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:37,824 INFO L495 AbstractCegarLoop]: Abstraction has 6274 states and 8640 transitions. [2022-11-22 01:25:37,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 01:25:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 8640 transitions. [2022-11-22 01:25:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-22 01:25:37,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:37,827 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 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] [2022-11-22 01:25:37,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:25:37,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1681657662, now seen corresponding path program 1 times [2022-11-22 01:25:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:37,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103883130] [2022-11-22 01:25:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:37,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-22 01:25:38,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:38,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103883130] [2022-11-22 01:25:38,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103883130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:38,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:38,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607577521] [2022-11-22 01:25:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:38,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:38,209 INFO L87 Difference]: Start difference. First operand 6274 states and 8640 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 01:25:40,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:43,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:43,829 INFO L93 Difference]: Finished difference Result 6292 states and 8655 transitions. [2022-11-22 01:25:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:25:43,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 92 [2022-11-22 01:25:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:43,858 INFO L225 Difference]: With dead ends: 6292 [2022-11-22 01:25:43,859 INFO L226 Difference]: Without dead ends: 6288 [2022-11-22 01:25:43,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:43,864 INFO L413 NwaCegarLoop]: 2588 mSDtfsCounter, 1705 mSDsluCounter, 6812 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 9400 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:43,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 9400 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 01:25:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2022-11-22 01:25:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 6284. [2022-11-22 01:25:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6284 states, 3565 states have (on average 1.2465638148667602) internal successors, (4444), 3786 states have internal predecessors, (4444), 2090 states have call successors, (2090), 638 states have call predecessors, (2090), 626 states have return successors, (2113), 1967 states have call predecessors, (2113), 2081 states have call successors, (2113) [2022-11-22 01:25:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6284 states to 6284 states and 8647 transitions. [2022-11-22 01:25:44,410 INFO L78 Accepts]: Start accepts. Automaton has 6284 states and 8647 transitions. Word has length 92 [2022-11-22 01:25:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:44,412 INFO L495 AbstractCegarLoop]: Abstraction has 6284 states and 8647 transitions. [2022-11-22 01:25:44,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 01:25:44,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6284 states and 8647 transitions. [2022-11-22 01:25:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-22 01:25:44,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:44,416 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:44,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:25:44,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:44,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1669740439, now seen corresponding path program 1 times [2022-11-22 01:25:44,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:44,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315692864] [2022-11-22 01:25:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:44,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-22 01:25:45,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:45,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315692864] [2022-11-22 01:25:45,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315692864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:45,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:45,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:45,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895170713] [2022-11-22 01:25:45,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:45,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:45,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:45,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:45,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:45,050 INFO L87 Difference]: Start difference. First operand 6284 states and 8647 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-22 01:25:47,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:50,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:51,142 INFO L93 Difference]: Finished difference Result 6303 states and 8662 transitions. [2022-11-22 01:25:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:25:51,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 109 [2022-11-22 01:25:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:51,165 INFO L225 Difference]: With dead ends: 6303 [2022-11-22 01:25:51,166 INFO L226 Difference]: Without dead ends: 6301 [2022-11-22 01:25:51,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:51,170 INFO L413 NwaCegarLoop]: 2671 mSDtfsCounter, 1386 mSDsluCounter, 7472 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:51,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 10143 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1320 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 01:25:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6301 states. [2022-11-22 01:25:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6301 to 6292. [2022-11-22 01:25:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6292 states, 3571 states have (on average 1.2455894707364883) internal successors, (4448), 3792 states have internal predecessors, (4448), 2090 states have call successors, (2090), 640 states have call predecessors, (2090), 628 states have return successors, (2113), 1967 states have call predecessors, (2113), 2081 states have call successors, (2113) [2022-11-22 01:25:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6292 states to 6292 states and 8651 transitions. [2022-11-22 01:25:51,649 INFO L78 Accepts]: Start accepts. Automaton has 6292 states and 8651 transitions. Word has length 109 [2022-11-22 01:25:51,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:51,651 INFO L495 AbstractCegarLoop]: Abstraction has 6292 states and 8651 transitions. [2022-11-22 01:25:51,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-22 01:25:51,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6292 states and 8651 transitions. [2022-11-22 01:25:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 01:25:51,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:51,655 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 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] [2022-11-22 01:25:51,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:25:51,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:51,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1162462116, now seen corresponding path program 1 times [2022-11-22 01:25:51,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:51,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578702476] [2022-11-22 01:25:51,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:51,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-22 01:25:52,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:52,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578702476] [2022-11-22 01:25:52,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578702476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:52,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:52,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071829826] [2022-11-22 01:25:52,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:52,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:52,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:52,063 INFO L87 Difference]: Start difference. First operand 6292 states and 8651 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:25:54,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:25:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:57,078 INFO L93 Difference]: Finished difference Result 6306 states and 8662 transitions. [2022-11-22 01:25:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:25:57,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 97 [2022-11-22 01:25:57,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:57,105 INFO L225 Difference]: With dead ends: 6306 [2022-11-22 01:25:57,105 INFO L226 Difference]: Without dead ends: 6151 [2022-11-22 01:25:57,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:25:57,111 INFO L413 NwaCegarLoop]: 2591 mSDtfsCounter, 1705 mSDsluCounter, 6818 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 9409 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:57,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 9409 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1240 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-22 01:25:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2022-11-22 01:25:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 6147. [2022-11-22 01:25:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 3487 states have (on average 1.2506452537998278) internal successors, (4361), 3706 states have internal predecessors, (4361), 2057 states have call successors, (2057), 611 states have call predecessors, (2057), 600 states have return successors, (2083), 1937 states have call predecessors, (2083), 2051 states have call successors, (2083) [2022-11-22 01:25:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 8501 transitions. [2022-11-22 01:25:57,562 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 8501 transitions. Word has length 97 [2022-11-22 01:25:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:57,563 INFO L495 AbstractCegarLoop]: Abstraction has 6147 states and 8501 transitions. [2022-11-22 01:25:57,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:25:57,563 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 8501 transitions. [2022-11-22 01:25:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-22 01:25:57,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:57,568 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:57,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:25:57,568 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:25:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:57,569 INFO L85 PathProgramCache]: Analyzing trace with hash -107491879, now seen corresponding path program 1 times [2022-11-22 01:25:57,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:57,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519322946] [2022-11-22 01:25:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:57,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-22 01:25:58,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:58,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519322946] [2022-11-22 01:25:58,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519322946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:58,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:58,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:25:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386529441] [2022-11-22 01:25:58,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:58,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:25:58,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:25:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:58,237 INFO L87 Difference]: Start difference. First operand 6147 states and 8501 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 01:26:00,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:26:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:03,140 INFO L93 Difference]: Finished difference Result 6457 states and 8839 transitions. [2022-11-22 01:26:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:26:03,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 146 [2022-11-22 01:26:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:03,169 INFO L225 Difference]: With dead ends: 6457 [2022-11-22 01:26:03,170 INFO L226 Difference]: Without dead ends: 6343 [2022-11-22 01:26:03,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:26:03,175 INFO L413 NwaCegarLoop]: 2416 mSDtfsCounter, 1330 mSDsluCounter, 6095 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 8511 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:03,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 8511 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1313 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-22 01:26:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2022-11-22 01:26:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 6343. [2022-11-22 01:26:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6343 states, 3576 states have (on average 1.241890380313199) internal successors, (4441), 3796 states have internal predecessors, (4441), 2092 states have call successors, (2092), 683 states have call predecessors, (2092), 672 states have return successors, (2118), 1970 states have call predecessors, (2118), 2086 states have call successors, (2118) [2022-11-22 01:26:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6343 states to 6343 states and 8651 transitions. [2022-11-22 01:26:03,672 INFO L78 Accepts]: Start accepts. Automaton has 6343 states and 8651 transitions. Word has length 146 [2022-11-22 01:26:03,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:03,672 INFO L495 AbstractCegarLoop]: Abstraction has 6343 states and 8651 transitions. [2022-11-22 01:26:03,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 01:26:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 6343 states and 8651 transitions. [2022-11-22 01:26:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-22 01:26:03,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:03,683 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:03,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:26:03,684 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:26:03,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1338135142, now seen corresponding path program 1 times [2022-11-22 01:26:03,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:03,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019633403] [2022-11-22 01:26:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:03,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-22 01:26:04,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:04,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019633403] [2022-11-22 01:26:04,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019633403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:04,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:26:04,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:26:04,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387100260] [2022-11-22 01:26:04,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:04,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:26:04,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:04,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:26:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:04,225 INFO L87 Difference]: Start difference. First operand 6343 states and 8651 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 01:26:06,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:26:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:08,025 INFO L93 Difference]: Finished difference Result 10745 states and 14600 transitions. [2022-11-22 01:26:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:08,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 268 [2022-11-22 01:26:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:08,055 INFO L225 Difference]: With dead ends: 10745 [2022-11-22 01:26:08,055 INFO L226 Difference]: Without dead ends: 6289 [2022-11-22 01:26:08,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:26:08,077 INFO L413 NwaCegarLoop]: 2501 mSDtfsCounter, 1683 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:08,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 4157 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 557 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 01:26:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2022-11-22 01:26:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 6287. [2022-11-22 01:26:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6287 states, 3541 states have (on average 1.2400451849759955) internal successors, (4391), 3755 states have internal predecessors, (4391), 2071 states have call successors, (2071), 683 states have call predecessors, (2071), 672 states have return successors, (2088), 1952 states have call predecessors, (2088), 2065 states have call successors, (2088) [2022-11-22 01:26:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6287 states to 6287 states and 8550 transitions. [2022-11-22 01:26:08,557 INFO L78 Accepts]: Start accepts. Automaton has 6287 states and 8550 transitions. Word has length 268 [2022-11-22 01:26:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:08,557 INFO L495 AbstractCegarLoop]: Abstraction has 6287 states and 8550 transitions. [2022-11-22 01:26:08,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 01:26:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6287 states and 8550 transitions. [2022-11-22 01:26:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-22 01:26:08,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:08,569 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:08,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:26:08,570 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:26:08,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:08,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1454608186, now seen corresponding path program 1 times [2022-11-22 01:26:08,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:08,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868513132] [2022-11-22 01:26:08,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:08,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-22 01:26:10,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:10,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868513132] [2022-11-22 01:26:10,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868513132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:26:10,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332154550] [2022-11-22 01:26:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:10,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:26:10,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:26:10,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:26:10,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:26:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:12,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 4667 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:26:12,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:26:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-11-22 01:26:12,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:26:12,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332154550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:12,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:26:12,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-22 01:26:12,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33470856] [2022-11-22 01:26:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:12,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:26:12,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:12,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:26:12,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:26:12,452 INFO L87 Difference]: Start difference. First operand 6287 states and 8550 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 01:26:15,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:26:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:26:16,600 INFO L93 Difference]: Finished difference Result 12586 states and 17134 transitions. [2022-11-22 01:26:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:26:16,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 314 [2022-11-22 01:26:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:26:16,626 INFO L225 Difference]: With dead ends: 12586 [2022-11-22 01:26:16,626 INFO L226 Difference]: Without dead ends: 6313 [2022-11-22 01:26:16,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:26:16,658 INFO L413 NwaCegarLoop]: 2216 mSDtfsCounter, 7 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:26:16,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4417 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 661 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 01:26:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2022-11-22 01:26:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 6295. [2022-11-22 01:26:17,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 3549 states have (on average 1.2395040856579318) internal successors, (4399), 3763 states have internal predecessors, (4399), 2071 states have call successors, (2071), 683 states have call predecessors, (2071), 672 states have return successors, (2088), 1952 states have call predecessors, (2088), 2065 states have call successors, (2088) [2022-11-22 01:26:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 8558 transitions. [2022-11-22 01:26:17,159 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 8558 transitions. Word has length 314 [2022-11-22 01:26:17,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:26:17,160 INFO L495 AbstractCegarLoop]: Abstraction has 6295 states and 8558 transitions. [2022-11-22 01:26:17,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 01:26:17,161 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 8558 transitions. [2022-11-22 01:26:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-22 01:26:17,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:26:17,172 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:26:17,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:26:17,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 01:26:17,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:26:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:26:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash -765226284, now seen corresponding path program 1 times [2022-11-22 01:26:17,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:26:17,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646573402] [2022-11-22 01:26:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:17,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:26:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-22 01:26:19,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:26:19,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646573402] [2022-11-22 01:26:19,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646573402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:26:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941476277] [2022-11-22 01:26:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:26:19,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:26:19,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:26:19,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:26:19,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43458b90-975a-4870-a253-9c4cf7748561/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:26:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:26:21,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 4805 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:26:21,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:26:21,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:26:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-22 01:26:21,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:26:21,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941476277] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:26:21,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1309632647] [2022-11-22 01:26:21,725 INFO L159 IcfgInterpreter]: Started Sifa with 199 locations of interest [2022-11-22 01:26:21,726 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:26:21,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:26:21,735 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:26:21,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:26:48,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 01:26:48,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:49,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:26:49,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:26:49,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:26:49,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:49,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-22 01:26:49,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:49,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 01:26:56,383 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_xmalloc with input of size 193 for LOIs [2022-11-22 01:26:56,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:56,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:56,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:56,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:57,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:57,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:57,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:57,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:57,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:57,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:57,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:57,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:58,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:58,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:58,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:58,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:58,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:26:58,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:26:58,668 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_err with input of size 205 for LOIs [2022-11-22 01:26:58,694 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_assume with input of size 184 for LOIs [2022-11-22 01:26:58,725 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undef_int with input of size 2440 for LOIs [2022-11-22 01:27:04,368 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:28:46,256 WARN L233 SmtUtils]: Spent 1.69m on a formula simplification. DAG size of input: 2562 DAG size of output: 2542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:30:17,305 WARN L233 SmtUtils]: Spent 1.50m on a formula simplification. DAG size of input: 2440 DAG size of output: 2418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:31:48,774 WARN L233 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 2447 DAG size of output: 2426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:32:19,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1309632647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:19,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:32:19,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [7, 7] total 34 [2022-11-22 01:32:19,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072793160] [2022-11-22 01:32:19,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:19,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:32:19,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:19,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:32:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 01:32:19,328 INFO L87 Difference]: Start difference. First operand 6295 states and 8558 transitions. Second operand has 24 states, 14 states have (on average 8.785714285714286) internal successors, (123), 13 states have internal predecessors, (123), 7 states have call successors, (55), 5 states have call predecessors, (55), 5 states have return successors, (51), 7 states have call predecessors, (51), 7 states have call successors, (51) [2022-11-22 01:34:10,927 WARN L233 SmtUtils]: Spent 1.84m on a formula simplification. DAG size of input: 2622 DAG size of output: 2555 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:36:02,551 WARN L233 SmtUtils]: Spent 1.84m on a formula simplification. DAG size of input: 2622 DAG size of output: 2555 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)