./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:17:55,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:17:55,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:17:55,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:17:55,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:17:55,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:17:55,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:17:55,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:17:55,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:17:55,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:17:55,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:17:55,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:17:55,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:17:55,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:17:55,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:17:55,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:17:55,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:17:55,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:17:55,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:17:55,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:17:55,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:17:55,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:17:55,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:17:55,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:17:55,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:17:55,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:17:55,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:17:55,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:17:55,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:17:55,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:17:55,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:17:55,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:17:55,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:17:55,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:17:55,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:17:55,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:17:55,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:17:55,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:17:55,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:17:55,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:17:55,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:17:55,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:17:55,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:17:55,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:17:55,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:17:55,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:17:55,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:17:55,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:17:55,195 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:17:55,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:17:55,195 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:17:55,196 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:17:55,197 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:17:55,197 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:17:55,197 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:17:55,197 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:17:55,198 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:17:55,198 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:17:55,198 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:17:55,198 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:17:55,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:17:55,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:17:55,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:17:55,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:17:55,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:17:55,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:17:55,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:17:55,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:17:55,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:17:55,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:17:55,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:17:55,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:17:55,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:17:55,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:17:55,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:17:55,202 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:17:55,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:17:55,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:17:55,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:17:55,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:17:55,203 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc [2021-11-25 19:17:55,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:17:55,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:17:55,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:17:55,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:17:55,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:17:55,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-25 19:17:55,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/data/bc6b69c0e/a7cf0c646f1b4e86b17b4ba461c84077/FLAG99b261243 [2021-11-25 19:17:56,544 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:17:56,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-25 19:17:56,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/data/bc6b69c0e/a7cf0c646f1b4e86b17b4ba461c84077/FLAG99b261243 [2021-11-25 19:17:56,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/data/bc6b69c0e/a7cf0c646f1b4e86b17b4ba461c84077 [2021-11-25 19:17:56,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:17:56,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:17:56,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:17:56,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:17:56,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:17:56,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:17:56" (1/1) ... [2021-11-25 19:17:56,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27146f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:56, skipping insertion in model container [2021-11-25 19:17:56,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:17:56" (1/1) ... [2021-11-25 19:17:56,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:17:57,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:18:01,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2021-11-25 19:18:01,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2021-11-25 19:18:01,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2021-11-25 19:18:01,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2021-11-25 19:18:01,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:18:01,203 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:18:01,713 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2021-11-25 19:18:01,713 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2021-11-25 19:18:01,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2021-11-25 19:18:01,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2021-11-25 19:18:01,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:18:02,041 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:18:02,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02 WrapperNode [2021-11-25 19:18:02,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:18:02,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:18:02,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:18:02,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:18:02,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,400 INFO L137 Inliner]: procedures = 559, calls = 2801, calls flagged for inlining = 291, calls inlined = 253, statements flattened = 5819 [2021-11-25 19:18:02,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:18:02,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:18:02,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:18:02,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:18:02,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:18:02,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:18:02,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:18:02,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:18:02,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (1/1) ... [2021-11-25 19:18:02,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:18:02,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:18:02,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:18:02,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a255f8f-823a-44d3-baa1-f74907a778be/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:18:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:18:02,841 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:18:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:18:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:18:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 19:18:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 19:18:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 19:18:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 19:18:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:18:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:18:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:18:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:18:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:18:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:18:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2021-11-25 19:18:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2021-11-25 19:18:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_80 [2021-11-25 19:18:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_80 [2021-11-25 19:18:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 19:18:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 19:18:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:18:02,845 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:18:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 19:18:02,845 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 19:18:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:18:02,846 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:18:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 19:18:02,846 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 19:18:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2021-11-25 19:18:02,846 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2021-11-25 19:18:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-25 19:18:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-25 19:18:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 19:18:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 19:18:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2021-11-25 19:18:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2021-11-25 19:18:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:18:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:18:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:18:02,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:18:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:18:02,848 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:18:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 19:18:02,849 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 19:18:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:18:02,850 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:18:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:18:02,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:18:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 19:18:02,851 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 19:18:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:18:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_62 [2021-11-25 19:18:02,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_62 [2021-11-25 19:18:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-25 19:18:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-25 19:18:02,853 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2021-11-25 19:18:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2021-11-25 19:18:02,853 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:18:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:18:02,853 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 19:18:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 19:18:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2021-11-25 19:18:02,854 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2021-11-25 19:18:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:18:02,854 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:18:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:18:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:18:02,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:18:02,855 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2021-11-25 19:18:02,855 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2021-11-25 19:18:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:18:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:18:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:18:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:18:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:18:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:18:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:18:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2021-11-25 19:18:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2021-11-25 19:18:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-25 19:18:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-25 19:18:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 19:18:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 19:18:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:18:02,859 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:18:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2021-11-25 19:18:02,859 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2021-11-25 19:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:18:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2021-11-25 19:18:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2021-11-25 19:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:18:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:18:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 19:18:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 19:18:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-25 19:18:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-25 19:18:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:18:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-25 19:18:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-25 19:18:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:18:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:18:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:18:02,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:18:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:18:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:18:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-25 19:18:02,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-25 19:18:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:18:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:18:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2021-11-25 19:18:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2021-11-25 19:18:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:18:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:18:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2021-11-25 19:18:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2021-11-25 19:18:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-25 19:18:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-25 19:18:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rhine_private [2021-11-25 19:18:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rhine_private [2021-11-25 19:18:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 19:18:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 19:18:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-25 19:18:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-25 19:18:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:18:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:18:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 19:18:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 19:18:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-25 19:18:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-25 19:18:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:18:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:18:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_68 [2021-11-25 19:18:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_68 [2021-11-25 19:18:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2021-11-25 19:18:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2021-11-25 19:18:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2021-11-25 19:18:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2021-11-25 19:18:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rhine_private [2021-11-25 19:18:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rhine_private [2021-11-25 19:18:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-25 19:18:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-25 19:18:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:18:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:18:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:18:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:18:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:18:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:18:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:18:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:18:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:18:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 19:18:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2021-11-25 19:18:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2021-11-25 19:18:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 19:18:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 19:18:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 19:18:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 19:18:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:18:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:18:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2021-11-25 19:18:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2021-11-25 19:18:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-25 19:18:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-25 19:18:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:18:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:18:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2021-11-25 19:18:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2021-11-25 19:18:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-25 19:18:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-25 19:18:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 19:18:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 19:18:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2021-11-25 19:18:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2021-11-25 19:18:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_79 [2021-11-25 19:18:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_79 [2021-11-25 19:18:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:18:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:18:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:18:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:18:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:18:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:18:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:18:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:18:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2021-11-25 19:18:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2021-11-25 19:18:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-25 19:18:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-25 19:18:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:18:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2021-11-25 19:18:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2021-11-25 19:18:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2021-11-25 19:18:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2021-11-25 19:18:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 19:18:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 19:18:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-25 19:18:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-25 19:18:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2021-11-25 19:18:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2021-11-25 19:18:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2021-11-25 19:18:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2021-11-25 19:18:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 19:18:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 19:18:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 19:18:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 19:18:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:18:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:18:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-25 19:18:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-25 19:18:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:18:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:18:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:18:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:18:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 19:18:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 19:18:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:18:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:18:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:18:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:18:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_63 [2021-11-25 19:18:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_63 [2021-11-25 19:18:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2021-11-25 19:18:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2021-11-25 19:18:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2021-11-25 19:18:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2021-11-25 19:18:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:18:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:18:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2021-11-25 19:18:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2021-11-25 19:18:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:18:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_67 [2021-11-25 19:18:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_67 [2021-11-25 19:18:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:18:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:18:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-25 19:18:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-25 19:18:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:18:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:18:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2021-11-25 19:18:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2021-11-25 19:18:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2021-11-25 19:18:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2021-11-25 19:18:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2021-11-25 19:18:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2021-11-25 19:18:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2021-11-25 19:18:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2021-11-25 19:18:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 19:18:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 19:18:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:18:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:18:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 19:18:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 19:18:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 19:18:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 19:18:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2021-11-25 19:18:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2021-11-25 19:18:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2021-11-25 19:18:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2021-11-25 19:18:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 19:18:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 19:18:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-25 19:18:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-25 19:18:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:18:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2021-11-25 19:18:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2021-11-25 19:18:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2021-11-25 19:18:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2021-11-25 19:18:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:18:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:18:03,887 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:18:03,891 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:18:04,050 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:27:12,040 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:27:12,120 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:27:15,496 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:27:15,496 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 19:27:15,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:15 BoogieIcfgContainer [2021-11-25 19:27:15,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:27:15,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:27:15,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:27:15,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:27:15,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:17:56" (1/3) ... [2021-11-25 19:27:15,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff498f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:27:15, skipping insertion in model container [2021-11-25 19:27:15,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:18:02" (2/3) ... [2021-11-25 19:27:15,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff498f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:27:15, skipping insertion in model container [2021-11-25 19:27:15,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:15" (3/3) ... [2021-11-25 19:27:15,511 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-25 19:27:15,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:27:15,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:27:15,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:27:15,603 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:27:15,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:27:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) [2021-11-25 19:27:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-25 19:27:15,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:15,708 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2021-11-25 19:27:15,708 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:27:15,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash -141573524, now seen corresponding path program 1 times [2021-11-25 19:27:15,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:15,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379938153] [2021-11-25 19:27:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:15,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-11-25 19:27:17,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:17,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379938153] [2021-11-25 19:27:17,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379938153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:17,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:17,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:27:17,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966166116] [2021-11-25 19:27:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:17,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:17,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:18,011 INFO L87 Difference]: Start difference. First operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 19:27:20,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:25,117 INFO L93 Difference]: Finished difference Result 4901 states and 7279 transitions. [2021-11-25 19:27:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:25,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 164 [2021-11-25 19:27:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:25,175 INFO L225 Difference]: With dead ends: 4901 [2021-11-25 19:27:25,175 INFO L226 Difference]: Without dead ends: 3233 [2021-11-25 19:27:25,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:25,196 INFO L933 BasicCegarLoop]: 2631 mSDtfsCounter, 2302 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 4674 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:25,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2302 Valid, 4674 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 19:27:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2021-11-25 19:27:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3229. [2021-11-25 19:27:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 1836 states have (on average 1.3044662309368191) internal successors, (2395), 1931 states have internal predecessors, (2395), 1140 states have call successors, (1140), 251 states have call predecessors, (1140), 250 states have return successors, (1136), 1110 states have call predecessors, (1136), 1136 states have call successors, (1136) [2021-11-25 19:27:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4671 transitions. [2021-11-25 19:27:25,535 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4671 transitions. Word has length 164 [2021-11-25 19:27:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:25,536 INFO L470 AbstractCegarLoop]: Abstraction has 3229 states and 4671 transitions. [2021-11-25 19:27:25,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 19:27:25,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4671 transitions. [2021-11-25 19:27:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-25 19:27:25,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:25,545 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:27:25,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:27:25,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:27:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash -658676959, now seen corresponding path program 1 times [2021-11-25 19:27:25,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:25,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899116550] [2021-11-25 19:27:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:25,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-25 19:27:26,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:26,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899116550] [2021-11-25 19:27:26,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899116550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:26,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:26,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:27:26,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438034205] [2021-11-25 19:27:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:26,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:26,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:26,982 INFO L87 Difference]: Start difference. First operand 3229 states and 4671 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:27:29,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:32,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:36,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:37,001 INFO L93 Difference]: Finished difference Result 9107 states and 13119 transitions. [2021-11-25 19:27:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:37,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2021-11-25 19:27:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:37,068 INFO L225 Difference]: With dead ends: 9107 [2021-11-25 19:27:37,068 INFO L226 Difference]: Without dead ends: 5907 [2021-11-25 19:27:37,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:37,091 INFO L933 BasicCegarLoop]: 2548 mSDtfsCounter, 1960 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:37,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1960 Valid, 4555 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 735 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-11-25 19:27:37,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5907 states. [2021-11-25 19:27:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 5878. [2021-11-25 19:27:37,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 3331 states have (on average 1.2957069948964275) internal successors, (4316), 3511 states have internal predecessors, (4316), 2065 states have call successors, (2065), 482 states have call predecessors, (2065), 479 states have return successors, (2063), 2002 states have call predecessors, (2063), 2061 states have call successors, (2063) [2021-11-25 19:27:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 8444 transitions. [2021-11-25 19:27:37,548 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 8444 transitions. Word has length 169 [2021-11-25 19:27:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:37,549 INFO L470 AbstractCegarLoop]: Abstraction has 5878 states and 8444 transitions. [2021-11-25 19:27:37,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:27:37,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 8444 transitions. [2021-11-25 19:27:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-25 19:27:37,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:37,561 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:27:37,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:27:37,562 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:27:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:37,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1072181144, now seen corresponding path program 1 times [2021-11-25 19:27:37,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:37,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910115677] [2021-11-25 19:27:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:37,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-11-25 19:27:39,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:39,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910115677] [2021-11-25 19:27:39,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910115677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:39,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:39,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:27:39,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600163927] [2021-11-25 19:27:39,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:39,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:27:39,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:39,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:27:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:27:39,285 INFO L87 Difference]: Start difference. First operand 5878 states and 8444 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 19:27:41,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:58,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:58,632 INFO L93 Difference]: Finished difference Result 15089 states and 21601 transitions. [2021-11-25 19:27:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:27:58,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2021-11-25 19:27:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:58,725 INFO L225 Difference]: With dead ends: 15089 [2021-11-25 19:27:58,726 INFO L226 Difference]: Without dead ends: 9240 [2021-11-25 19:27:58,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:27:58,766 INFO L933 BasicCegarLoop]: 3270 mSDtfsCounter, 5970 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 3071 mSolverCounterSat, 1206 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6109 SdHoareTripleChecker+Valid, 7323 SdHoareTripleChecker+Invalid, 4278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 3071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:58,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6109 Valid, 7323 Invalid, 4278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1206 Valid, 3071 Invalid, 1 Unknown, 0 Unchecked, 18.6s Time] [2021-11-25 19:27:58,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2021-11-25 19:27:59,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 9182. [2021-11-25 19:27:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9182 states, 5212 states have (on average 1.2904834996162702) internal successors, (6726), 5492 states have internal predecessors, (6726), 3176 states have call successors, (3176), 799 states have call predecessors, (3176), 791 states have return successors, (3175), 3062 states have call predecessors, (3175), 3172 states have call successors, (3175) [2021-11-25 19:27:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9182 states to 9182 states and 13077 transitions. [2021-11-25 19:27:59,370 INFO L78 Accepts]: Start accepts. Automaton has 9182 states and 13077 transitions. Word has length 181 [2021-11-25 19:27:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:59,372 INFO L470 AbstractCegarLoop]: Abstraction has 9182 states and 13077 transitions. [2021-11-25 19:27:59,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 19:27:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 9182 states and 13077 transitions. [2021-11-25 19:27:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-25 19:27:59,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:59,380 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2021-11-25 19:27:59,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:27:59,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:27:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1992989176, now seen corresponding path program 1 times [2021-11-25 19:27:59,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:59,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982639204] [2021-11-25 19:27:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:59,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-11-25 19:28:00,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:00,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982639204] [2021-11-25 19:28:00,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982639204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:00,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:00,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:28:00,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017488899] [2021-11-25 19:28:00,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:00,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:28:00,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:28:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:28:00,806 INFO L87 Difference]: Start difference. First operand 9182 states and 13077 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 19:28:02,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:07,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:08,877 INFO L93 Difference]: Finished difference Result 26009 states and 36940 transitions. [2021-11-25 19:28:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:28:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2021-11-25 19:28:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:09,026 INFO L225 Difference]: With dead ends: 26009 [2021-11-25 19:28:09,026 INFO L226 Difference]: Without dead ends: 16856 [2021-11-25 19:28:09,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:28:09,091 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 2042 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 4795 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:09,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2042 Valid, 4795 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-25 19:28:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16856 states. [2021-11-25 19:28:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16856 to 16817. [2021-11-25 19:28:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16817 states, 9511 states have (on average 1.2726316896225423) internal successors, (12104), 10020 states have internal predecessors, (12104), 5780 states have call successors, (5780), 1536 states have call predecessors, (5780), 1523 states have return successors, (5779), 5569 states have call predecessors, (5779), 5776 states have call successors, (5779) [2021-11-25 19:28:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 23663 transitions. [2021-11-25 19:28:10,111 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 23663 transitions. Word has length 186 [2021-11-25 19:28:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:10,115 INFO L470 AbstractCegarLoop]: Abstraction has 16817 states and 23663 transitions. [2021-11-25 19:28:10,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 19:28:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 23663 transitions. [2021-11-25 19:28:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-25 19:28:10,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:10,126 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2021-11-25 19:28:10,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:28:10,127 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:28:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash -159327193, now seen corresponding path program 1 times [2021-11-25 19:28:10,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:10,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847165004] [2021-11-25 19:28:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:10,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-25 19:28:11,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:11,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847165004] [2021-11-25 19:28:11,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847165004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:11,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:11,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:28:11,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285153222] [2021-11-25 19:28:11,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:11,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:28:11,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:28:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:28:11,365 INFO L87 Difference]: Start difference. First operand 16817 states and 23663 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:28:13,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:19,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:21,022 INFO L93 Difference]: Finished difference Result 46587 states and 65606 transitions. [2021-11-25 19:28:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:28:21,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 206 [2021-11-25 19:28:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:21,192 INFO L225 Difference]: With dead ends: 46587 [2021-11-25 19:28:21,193 INFO L226 Difference]: Without dead ends: 29799 [2021-11-25 19:28:21,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:28:21,264 INFO L933 BasicCegarLoop]: 2949 mSDtfsCounter, 2271 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 4981 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:21,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 4981 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 19:28:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2021-11-25 19:28:22,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29750. [2021-11-25 19:28:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29750 states, 16841 states have (on average 1.2694614334065673) internal successors, (21379), 17778 states have internal predecessors, (21379), 10209 states have call successors, (10209), 2722 states have call predecessors, (10209), 2697 states have return successors, (10211), 9809 states have call predecessors, (10211), 10205 states have call successors, (10211) [2021-11-25 19:28:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29750 states to 29750 states and 41799 transitions. [2021-11-25 19:28:23,057 INFO L78 Accepts]: Start accepts. Automaton has 29750 states and 41799 transitions. Word has length 206 [2021-11-25 19:28:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:23,058 INFO L470 AbstractCegarLoop]: Abstraction has 29750 states and 41799 transitions. [2021-11-25 19:28:23,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:28:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand 29750 states and 41799 transitions. [2021-11-25 19:28:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-25 19:28:23,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:23,064 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:28:23,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:28:23,065 INFO L402 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)] === [2021-11-25 19:28:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1039484783, now seen corresponding path program 1 times [2021-11-25 19:28:23,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:23,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16035056] [2021-11-25 19:28:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:23,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-25 19:28:24,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:24,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16035056] [2021-11-25 19:28:24,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16035056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:24,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:24,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:28:24,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229175142] [2021-11-25 19:28:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:24,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:28:24,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:28:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:28:24,948 INFO L87 Difference]: Start difference. First operand 29750 states and 41799 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 19:28:27,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:33,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:38,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:38,146 INFO L93 Difference]: Finished difference Result 58133 states and 81663 transitions. [2021-11-25 19:28:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:28:38,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 209 [2021-11-25 19:28:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:38,596 INFO L225 Difference]: With dead ends: 58133 [2021-11-25 19:28:38,596 INFO L226 Difference]: Without dead ends: 58131 [2021-11-25 19:28:38,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:28:38,622 INFO L933 BasicCegarLoop]: 2828 mSDtfsCounter, 2252 mSDsluCounter, 8852 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 10485 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:38,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2263 Valid, 10485 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1642 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2021-11-25 19:28:38,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58131 states. [2021-11-25 19:28:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58131 to 57969. [2021-11-25 19:28:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57969 states, 32883 states have (on average 1.2720858802420705) internal successors, (41830), 34728 states have internal predecessors, (41830), 19816 states have call successors, (19816), 5317 states have call predecessors, (19816), 5267 states have return successors, (19832), 19015 states have call predecessors, (19832), 19808 states have call successors, (19832) [2021-11-25 19:28:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57969 states to 57969 states and 81478 transitions. [2021-11-25 19:28:42,119 INFO L78 Accepts]: Start accepts. Automaton has 57969 states and 81478 transitions. Word has length 209 [2021-11-25 19:28:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:42,120 INFO L470 AbstractCegarLoop]: Abstraction has 57969 states and 81478 transitions. [2021-11-25 19:28:42,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 19:28:42,121 INFO L276 IsEmpty]: Start isEmpty. Operand 57969 states and 81478 transitions. [2021-11-25 19:28:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-25 19:28:42,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:42,128 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 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] [2021-11-25 19:28:42,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:28:42,129 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:28:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1664184921, now seen corresponding path program 1 times [2021-11-25 19:28:42,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:42,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669732352] [2021-11-25 19:28:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:42,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-11-25 19:28:43,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:43,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669732352] [2021-11-25 19:28:43,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669732352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:43,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:43,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:28:43,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33342390] [2021-11-25 19:28:43,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:43,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:28:43,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:43,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:28:43,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:28:43,998 INFO L87 Difference]: Start difference. First operand 57969 states and 81478 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 19:28:46,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:52,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:55,202 INFO L93 Difference]: Finished difference Result 57979 states and 81487 transitions. [2021-11-25 19:28:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:28:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 212 [2021-11-25 19:28:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:55,563 INFO L225 Difference]: With dead ends: 57979 [2021-11-25 19:28:55,564 INFO L226 Difference]: Without dead ends: 57977 [2021-11-25 19:28:55,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:28:55,597 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2342 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:55,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2352 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-11-25 19:28:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57977 states. [2021-11-25 19:28:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57977 to 57977. [2021-11-25 19:28:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57977 states, 32889 states have (on average 1.2720362431208003) internal successors, (41836), 34734 states have internal predecessors, (41836), 19816 states have call successors, (19816), 5319 states have call predecessors, (19816), 5269 states have return successors, (19832), 19015 states have call predecessors, (19832), 19808 states have call successors, (19832) [2021-11-25 19:28:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57977 states to 57977 states and 81484 transitions. [2021-11-25 19:28:58,659 INFO L78 Accepts]: Start accepts. Automaton has 57977 states and 81484 transitions. Word has length 212 [2021-11-25 19:28:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:58,660 INFO L470 AbstractCegarLoop]: Abstraction has 57977 states and 81484 transitions. [2021-11-25 19:28:58,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 19:28:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 57977 states and 81484 transitions. [2021-11-25 19:28:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-25 19:28:58,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:58,673 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:28:58,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:28:58,673 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:28:58,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:58,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1248176187, now seen corresponding path program 1 times [2021-11-25 19:28:58,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:58,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564675343] [2021-11-25 19:28:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:58,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2021-11-25 19:29:00,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564675343] [2021-11-25 19:29:00,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564675343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:00,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:00,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:29:00,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136679314] [2021-11-25 19:29:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:00,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:29:00,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:00,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:29:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:29:00,228 INFO L87 Difference]: Start difference. First operand 57977 states and 81484 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:29:02,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:08,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:10,865 INFO L93 Difference]: Finished difference Result 57987 states and 81493 transitions. [2021-11-25 19:29:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:29:10,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2021-11-25 19:29:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:11,305 INFO L225 Difference]: With dead ends: 57987 [2021-11-25 19:29:11,305 INFO L226 Difference]: Without dead ends: 57985 [2021-11-25 19:29:11,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:29:11,331 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:11,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-25 19:29:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57985 states. [2021-11-25 19:29:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57985 to 57985. [2021-11-25 19:29:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57985 states, 32895 states have (on average 1.2719866241070072) internal successors, (41842), 34740 states have internal predecessors, (41842), 19816 states have call successors, (19816), 5321 states have call predecessors, (19816), 5271 states have return successors, (19832), 19015 states have call predecessors, (19832), 19808 states have call successors, (19832) [2021-11-25 19:29:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57985 states to 57985 states and 81490 transitions. [2021-11-25 19:29:14,507 INFO L78 Accepts]: Start accepts. Automaton has 57985 states and 81490 transitions. Word has length 218 [2021-11-25 19:29:14,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:14,510 INFO L470 AbstractCegarLoop]: Abstraction has 57985 states and 81490 transitions. [2021-11-25 19:29:14,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:29:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 57985 states and 81490 transitions. [2021-11-25 19:29:14,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-25 19:29:14,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:14,523 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:29:14,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:29:14,524 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:29:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -932899929, now seen corresponding path program 1 times [2021-11-25 19:29:14,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:14,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826254668] [2021-11-25 19:29:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:14,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-11-25 19:29:16,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:16,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826254668] [2021-11-25 19:29:16,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826254668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:16,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:16,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:29:16,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063154165] [2021-11-25 19:29:16,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:16,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:29:16,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:16,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:29:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:29:16,538 INFO L87 Difference]: Start difference. First operand 57985 states and 81490 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 19:29:18,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:26,127 INFO L93 Difference]: Finished difference Result 57995 states and 81499 transitions. [2021-11-25 19:29:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:29:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 222 [2021-11-25 19:29:26,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:26,456 INFO L225 Difference]: With dead ends: 57995 [2021-11-25 19:29:26,456 INFO L226 Difference]: Without dead ends: 57993 [2021-11-25 19:29:26,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:29:26,506 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2342 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:26,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-25 19:29:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57993 states. [2021-11-25 19:29:29,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57993 to 57993. [2021-11-25 19:29:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57993 states, 32901 states have (on average 1.2719370231907845) internal successors, (41848), 34746 states have internal predecessors, (41848), 19816 states have call successors, (19816), 5323 states have call predecessors, (19816), 5273 states have return successors, (19832), 19015 states have call predecessors, (19832), 19808 states have call successors, (19832) [2021-11-25 19:29:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57993 states to 57993 states and 81496 transitions. [2021-11-25 19:29:30,349 INFO L78 Accepts]: Start accepts. Automaton has 57993 states and 81496 transitions. Word has length 222 [2021-11-25 19:29:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:30,365 INFO L470 AbstractCegarLoop]: Abstraction has 57993 states and 81496 transitions. [2021-11-25 19:29:30,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 19:29:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 57993 states and 81496 transitions. [2021-11-25 19:29:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-25 19:29:30,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:30,379 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:29:30,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:29:30,380 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:29:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1601328239, now seen corresponding path program 1 times [2021-11-25 19:29:30,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:30,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680723675] [2021-11-25 19:29:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:30,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2021-11-25 19:29:31,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:31,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680723675] [2021-11-25 19:29:31,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680723675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:31,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:31,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:29:31,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482955673] [2021-11-25 19:29:31,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:31,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:29:31,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:31,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:29:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:29:31,947 INFO L87 Difference]: Start difference. First operand 57993 states and 81496 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:29:34,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:41,953 INFO L93 Difference]: Finished difference Result 58003 states and 81505 transitions. [2021-11-25 19:29:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:29:41,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 229 [2021-11-25 19:29:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:42,166 INFO L225 Difference]: With dead ends: 58003 [2021-11-25 19:29:42,166 INFO L226 Difference]: Without dead ends: 58001 [2021-11-25 19:29:42,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:29:42,190 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:42,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2348 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 19:29:42,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58001 states. [2021-11-25 19:29:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58001 to 58001. [2021-11-25 19:29:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58001 states, 32907 states have (on average 1.271887440362233) internal successors, (41854), 34752 states have internal predecessors, (41854), 19816 states have call successors, (19816), 5325 states have call predecessors, (19816), 5275 states have return successors, (19832), 19015 states have call predecessors, (19832), 19808 states have call successors, (19832) [2021-11-25 19:29:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58001 states to 58001 states and 81502 transitions. [2021-11-25 19:29:45,611 INFO L78 Accepts]: Start accepts. Automaton has 58001 states and 81502 transitions. Word has length 229 [2021-11-25 19:29:45,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:45,612 INFO L470 AbstractCegarLoop]: Abstraction has 58001 states and 81502 transitions. [2021-11-25 19:29:45,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:29:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 58001 states and 81502 transitions. [2021-11-25 19:29:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-25 19:29:45,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:45,639 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:29:45,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:29:45,639 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:29:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1739230763, now seen corresponding path program 1 times [2021-11-25 19:29:45,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:45,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875387334] [2021-11-25 19:29:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:45,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2021-11-25 19:29:47,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:47,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875387334] [2021-11-25 19:29:47,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875387334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:47,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:47,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:29:47,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634865959] [2021-11-25 19:29:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:47,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:29:47,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:29:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:29:47,068 INFO L87 Difference]: Start difference. First operand 58001 states and 81502 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 19:29:49,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:54,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:00,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:00,354 INFO L93 Difference]: Finished difference Result 168099 states and 236315 transitions. [2021-11-25 19:30:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:30:00,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 249 [2021-11-25 19:30:00,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:00,851 INFO L225 Difference]: With dead ends: 168099 [2021-11-25 19:30:00,852 INFO L226 Difference]: Without dead ends: 110127 [2021-11-25 19:30:01,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:30:01,019 INFO L933 BasicCegarLoop]: 2652 mSDtfsCounter, 2334 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4701 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:30:01,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 4701 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 713 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-25 19:30:01,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110127 states.